Preprints

  1. S. Chatterjee, A. Maity, J. Potten, T. Müller, A. Feuerpfeil, R. Thomale, K. Penc, H. O. Jeschke, R. Samajdar, Y. Iqbal:
    Semi-Dirac spin liquids and frustrated quantum magnetism on the trellis lattice
    [arXiv:2509.02663] [ADS]
  2. F. Schilberth, M. Kondákor, D. Ukolov, A. Pawbake, K. Vasin, O. Ercem, L. Prodan, V. Tsurkan, A. A. Tsirlin, C. Faugeras, P. Lemmens, K. Penc, I. Kézsmárki, S. Bordács, J. Deisenhofer:
    Optical phonons as a testing ground for spin group symmetries
    [arXiv:2508.09793] [ADS]
  3. Hee Seung Kim, Hyeok-Jun Yang, Karlo Penc, SungBin Lee:
    Spin Liquid Landscapes in the Kagome Lattice: A Variational Monte Carlo Study of the Chiral Heisenberg Model and Experimental Consequences
    [arXiv:2411.09542] [ADS]

Book chapters

  1. K. Penc, A. M. Läuchli:
    Spin Nematic Phases in Quantum Spin Systems
    in `Introduction to Frustrated Magnetism', Chapter 13, p. 331-362, Springer Series in Solid-State Sciences, Vol. 164, eds. C. Lacroix, F. Mila, and P. Mendels (Springer, 2011) [doi: 10.1007/978-3-642-10589-0_13] [ADS] [pdf]

Papers

  1. Nanse Esaki, Yutaka Akagi, Karlo Penc, Hosho Katsura:
    Spin Nernst and thermal Hall effects of topological triplons in quantum dimer magnets on the maple-leaf and star lattices
    Phys. Rev. B 112, 134435/1-20 (2025). [arXiv:2505.09420] [pdf] [ADS]
  2. B. Hetényi, A. Lászlóffy, K. Penc, B. Újfalussy:
    Topological indicators for systems with open boundaries: Application to the Kitaev wire
    Phys. Rev. B 112, 075115/1-12 (2025). [arXiv:2507.21283] [pdf] [ADS]
  3. Dániel Vörös, Péter Kránitz, Karlo Penc:
    The algebraic spin liquid in the SU(6) Heisenberg model on the kagome lattice
    Phys. Rev. B 110, 144437/1-29 (2024). [arXiv:2407.09713] [pdf] [ADS]
  4. Dániel Vörös, Karlo Penc:
    Dynamical structure factor of the SU(4) algebraic spin liquid on the honeycomb lattice
    Phys. Rev. B 108, 214407/1-10 (2023). [arXiv:2306.16242] [pdf] [ADS] IF: 3.7
  5. Yi Xu, Sylvain Capponi, Ji-Yao Chen, Laurens Vanderstraeten, Juraj Hasik, Andriy H. Nevidomskyy, Matthieu Mambrini, Karlo Penc, Didier Poilblanc
    Phase diagram of the chiral SU(3) antiferromagnet on the kagome lattice
    Phys. Rev. B 108, 195153/1-22 (2023). [arXiv:2306.16192] [pdf] [ADS] IF: 3.7
  6. Márk Kondákor, Karlo Penc:
    Crystalline phases and devil's staircase in qubit spin ice
    Phys. Rev. Research 5, 043172/1-28 (2023). [arXiv:2305.08571] [pdf] [ADS] IF: 4.2
  7. Dániel Vörös, Karlo Penc:
    Dynamical structure factor of the SU(3) Heisenberg chain: Variational Monte Carlo approach
    Phys. Rev. B 104, 184426/1-19 (2021). [arXiv:2107.09588] [pdf] [ADS] IF: 3.908
  8. J. Vít, J. Viirok, L. Peedu, T. Rõõm, U. Nagel, V. Kocsis, Y. Tokunaga, Y. Taguchi, Y. Tokura, I. Kézsmárki, P. Balla, K. Penc, J. Romhányi, S. Bordács:
    In situ electric-field control of THz nonreciprocal directional dichroism in the multiferroic Ba2CoGe2O7
    Phys. Rev. Lett. 127, 157201/1-6 (2021). [arXiv:2101.10045] [pdf] [ADS] IF: 9.185
  9. A. Thomasen, K. Penc, N. Shannon, J. Romhányi:
    Fragility of Z2 topological invariant characterizing triplet excitations in a bilayer kagome magnet
    Phys. Rev. B 104, 104412/1-22 (2021). [arXiv:2012.11765] [pdf] [ADS] IF: 3.908
  10. P. Balla, Y. Iqbal, K. Penc:
    Degenerate manifolds, helimagnets, and multi-Q chiral phases in the classical Heisenberg antiferromagnet on the face-centered-cubic lattice
    Phys. Rev. Research 2, 043278/1-25 (2020). [doi: 10.1103/PhysRevResearch.2.043278] [arXiv:2007.00376] [pdf] [ADS] IF: 0
  11. C. Boos, C. J. Ganahl, M. Lajkó, P. Nataf, K. Penc, A. M. Läuchli, K. P. Schmidt, F. Mila:
    Time-reversal symmetry breaking Abelian chiral spin liquid in Mott phases of three-component fermions on the triangular lattice
    Phys. Rev. Research 2, 023098/1-22 (2020). [doi: 10.1103/PhysRevResearch.2.023098] [arXiv:1802.03179] [pdf] [ADS] IF: 0
  12. P. Balla, Y. Iqbal, K. Penc:
    Affine lattice construction of spiral surfaces in frustrated Heisenberg models
    Phys. Rev. B 100, 140402/1-5 (2019). [doi: 10.1103/PhysRevB.100.140402] [arXiv:1905.12504] [pdf] [ADS] IF: 3.575
  13. F. H. Kim, F. F. Assaad, K. Penc, F. Mila:
    Dimensional crossover in the SU(4) Heisenberg model in the six-dimensional antisymmetric self-conjugate representation: Quantum Monte Carlo versus linear flavor-wave theory
    Phys. Rev. B 100, 085103/1-8 (2019). [doi: 10.1103/PhysRevB.100.085103] [arXiv:1906.06938] [pdf] [ADS] IF: 3.575
  14. L. Rossi, A. Bobel, S. Wiedmann, R. Küchler, Y. Motome, K. Penc, N. Shannon, H. Ueda, B. Bryant:
    Negative thermal expansion in the plateau state of a magnetically-frustrated spinel
    Phys. Rev. Lett. 123, 027205/1-6 (2019). [doi: 10.1103/PhysRevLett.123.027205] [arXiv:1812.05890] [pdf] [pdf] [ADS] IF: 8.385
  15. J. Viirok, U. Nagel, T. Rõõm, D. Farkas, P. Balla, D. Szaller, V. Kocsis, Y. Tokunaga, Y. Taguchi, Y. Tokura, B. Bernáth, D. L. Kamenskyi, I. Kézsmárki, S. Bordács, K. Penc:
    Directional dichroism in the paramagnetic state of multiferroics: A case study of infrared light absorption in Sr2CoSi2O7 at high temperatures
    Phys. Rev. B 99, 014410/1-14 (2019). [doi: 10.1103/PhysRevB.99.014410] [arXiv:1809.10207] [pdf] [ADS] IF: 3.575
  16. P. A. McClarty, X.-Y. Dong, M. Gohlke, J. G. Rau, F. Pollmann, R. Moessner, K. Penc:
    Topological Magnons in Kitaev Magnets at High Fields
    Phys. Rev. B 98, 060404(R)/1-6 (2018). [doi: 10.1103/PhysRevB.98.060404] [arXiv:1802.04283] [pdf] [ADS] IF: 3.736
  17. V. Kocsis, K. Penc, T. Rõõm, U. Nagel, J. Vít, J. Romhányi, Y. Tokunaga, Y. Taguchi, Y. Tokura, I. Kézsmárki, S. Bordács:
    Identification of Antiferromagnetic Domains Via the Optical Magnetoelectric Effect
    Phys. Rev. Lett. 121, 057601/1-5 (2018). [doi: 10.1103/PhysRevLett.121.057601] [arXiv:1711.08124] [pdf] [ADS] IF: 9.227
  18. M. Akaki, D. Yoshizawa, A. Okutani, T. Kida, J. Romhányi, K. Penc, M. Hagiwara:
    Direct observation of spin-quadrupolar excitations in Sr2CoGe2O7 by high field ESR
    Phys. Rev. B 96, 214406/1-16 (2017). [doi: 10.1103/PhysRevB.96.214406] [arXiv:1702.04158] [pdf] [ADS] IF: 3.813
  19. F. H. Kim, K. Penc, P. Nataf, F. Mila:
    Linear Flavor-Wave Theory for Fully Antisymmetric SU(N) Irreducible Representations
    Phys. Rev. B 96, 205142/1-11 (2017). [doi: 10.1103/PhysRevB.96.205142] [arXiv:1711.05089] [pdf] [ADS] IF: 3.813
  20. P. Nataf, M. Lajkó, A. Wietek, K. Penc, F. Mila, A. M. Läuchli:
    Chiral spin liquids in triangular lattice SU(N) fermionic Mott insulators with artificial gauge fields
    Phys. Rev. Lett. 117, 167202/1-6 (2016). [doi: 10.1103/PhysRevLett.117.167202] [arXiv:1601.00958] [pdf] [ADS] IF: 8.462
  21. T. Coletta, T. A. Tóth, K. Penc, F. Mila:
    Semiclassical theory of the magnetization process of the triangular lattice Heisenberg model
    Phys. Rev. B 94, 075136/1-10 (2016). [doi: 10.1103/PhysRevB.94.075136] [arXiv:1605.06347] [pdf] [ADS] IF: 3.836
  22. P. Nataf, M. Lajkó, P. Corboz, A. M. Läuchli, K. Penc, F. Mila:
    SU(6) Heisenberg model on the honeycomb lattice: competition between plaquette and chiral order
    Phys. Rev. B 93, 201113(R)/1-6 (2016). [doi: 10.1103/PhysRevB.93.201113] [arXiv:1601.00959] [pdf] [ADS] IF: 3.836
  23. P. Sinkovicz, G. Szirmai, K. Penc:
    Order by disorder in a four flavor Mott-insulator on the fcc lattice
    Phys. Rev. B 93, 075137/1-11 (2016). [doi: 10.1103/PhysRevB.93.075137] [arXiv:1511.05765] [pdf] [ADS] IF: 3.836
  24. P. McClarty, O. Sikora, R. Moessner, K. Penc, F. Pollmann, N. Shannon:
    What is the quantum ground state of dipolar spin ice?
    Phys. Rev. B 92, 094418/1-21 (2015). [doi: 10.1103/PhysRevB.92.094418] [arXiv:1410.0451] [pdf] [ADS] IF: 3.718
  25. J. Romhányi, K. Penc, R. Ganesh:
    Hall effect of triplons in a dimerized quantum magnet
    Nat. Comm. 6, 6805/1-6 (2015). [doi: 10.1038/ncomms7805] [arXiv:1406.1163] [pdf] [ADS] IF: 11.329
  26. F. Pollmann, K. Roychowdhury, C. Hotta, K. Penc:
    Interplay of charge and spin fluctuations of strongly interacting electrons on the kagome lattice
    Phys. Rev. B 90, 035118/1-10 (2014). [doi: 10.1103/PhysRevB.90.035118] [arXiv:1402.4932] [pdf] [ADS] IF: 3.736
  27. S. Hu, A. M. Turner, K. Penc, F. Pollmann:
    Berry phase induced dimerization in one-dimensional quadrupolar systems
    Phys. Rev. Lett. 113, 027202/1-5 (2014). [doi: 10.1103/PhysRevLett.113.027202] [arXiv:1401.3246] [arxiv pdf] [pdf] [ADS] IF: 7.512
  28. S. Wenzel, S. E. Korshunov, K. Penc, F. Mila:
    Zero-temperature Monte Carlo study of the non-coplanar phase of the classical bilinear-biquadratic Heisenberg model on the triangular lattice
    Phys. Rev. B 88, 094404/1-14 (2013). [doi: 10.1103/PhysRevB.88.094404] [arXiv:1305.6418] [pdf] [ADS] IF: 3.664
  29. M. Lajkó, K. Penc:
    Tetramerization in a SU(4) Heisenberg model on the honeycomb lattice
    Phys. Rev. B 87, 224428/1-10 (2013). [doi: 10.1103/PhysRevB.87.224428] [arxiv:1303.6297] [pdf] [ADS] IF: 3.664
  30. P. Corboz, M. Lajkó, K. Penc, F. Mila, A. M. Läuchli:
    Competing states in the SU(3) Heisenberg model on the honeycomb lattice: Plaquette valence-bond crystal versus dimerized color-ordered state
    Phys. Rev. B 87, 195113/1-11 (2013). [doi: 10.1103/PhysRevB.87.195113] [arxiv:1302.1108] [pdf] [ADS] IF: 3.664
  31. V. Kocsis, S. Bordács, D. Varjas, K. Penc, A. Abouelsayed, C. A. Kuntscher, K. Ohgushi, Y. Tokura, I. Kézsmárki:
    Magnetoelasticity in ACr2O4 spinel oxides
    Phys. Rev. B 87, 064416/1-9 (2013). [doi: 10.1103/PhysRevB.87.064416] [arxiv:1212.4301] [pdf] [ADS] IF: 3.664
  32. J. Romhányi, K. Penc:
    Multiboson spin-wave theory for Ba2CoGe2O7, a spin-3/2 easy-plane Néel antiferromagnet with strong single-ion anisotropy
    Phys. Rev. B 86, 174428/1-10 (2012). [doi: 10.1103/PhysRevB.86.174428] [arxiv:1205.2196] [pdf] [ADS] IF: 3.767
  33. P. Corboz, M. Lajkó, A. M. Läuchli, K. Penc, F. Mila:
    Spin-orbital quantum liquid on the honeycomb lattice
    Phys. Rev. X 2, 041013/1-11 (2012). [doi: 10.1103/PhysRevX.2.041013] [arxiv:1207.6029] [pdf] [ADS] IF: 6.711
  34. A. Miyata, H. Ueda, Y. Ueda, Y. Motome, N. Shannon, K. Penc, S. Takeyama:
    Magnetic Phases of ZnCr2O4 Revealed by Magneto-Optical Studies under Ultra-High Magnetic Fields of up to 600 T
    J. Phys. Soc. Jpn. 81, 114701/1-8 (2012). [doi: 10.1143/JPSJ.81.114701] [pdf] [ADS] IF: 2.087
  35. P. Corboz, K. Penc, F. Mila, A. M. Läuchli:
    Simplex solids in SU(N) Heisenberg models on the kagome and checkerboard lattices
    Phys. Rev. B 86, 041106(R)/1-5 (2012). [doi: 10.1103/PhysRevB.86.041106] [arxiv:1204.6682] [pdf] [ADS] IF: 3.767
  36. K. Penc, J. Romhányi, T. Rõõm, U. Nagel, Á. Antal, T. Fehér, A. Jánossy, H. Engelkamp, H. Murakawa, Y. Tokura, D. Szaller, S. Bordács, I. Kézsmárki:
    Spin-stretching modes in non-centrosymmetric magnets: spin-wave excitations in the multiferroic Ba2CoGe2O7
    Phys. Rev. Lett. 108, 257203/1-5 (2012). [doi: 10.1103/PhysRevLett.108.257203] [arxiv:1202.3996] [pdf] [ADS] IF: 7.943
  37. S. E. Korshunov, F. Mila, K. Penc:
    Degeneracy and ordering of the non-coplanar phase of the classical bilinear-biquadratic Heisenberg model on the triangular lattice
    Phys. Rev. B 85, 174420/1-9 (2012). [doi: 10.1103/PhysRevB.85.174420] [arxiv:1202.3214] [pdf] [ADS] IF: 3.767
  38. R. G. Pereira, K. Penc, S. R. White, P. D. Sacramento, J. M. P. Carmelo:
    Charge dynamics in half-filled Hubbard chains
    Phys. Rev. B 85, 165132/1-19 (2012). [doi: 10.1103/PhysRevB.85.165132] [arxiv:1111.2009] [pdf] [ADS] IF: 3.767
  39. T. A. Tóth, A. M. Läuchli, F. Mila, K. Penc:
    Competition between two- and three-sublattice ordering for S=1 spins on the square lattice
    Phys. Rev. B 85, 140403(R)/1-5 (2012). [doi: 10.1103/PhysRevB.85.140403] [arxiv:1110.2495] [pdf] [ADS] IF: 3.767
  40. B. Bauer, P. Corboz, A. M. Läuchli, L. Messio, K. Penc, M. Troyer, F. Mila:
    Three-sublattice order in the SU(3) Heisenberg model on the square and triangular lattice
    Phys. Rev. B 85, 125116/1-11 (2012). [doi: 10.1103/PhysRevB.85.125116] [arxiv:1112.1100] [pdf] [ADS] IF: 3.767
  41. N. Shannon, O. Sikora, F. Pollmann, K. Penc, P. Fulde:
    Quantum Ice : a quantum Monte Carlo study
    Phys. Rev. Lett. 108, 067204/1-5 (2012). [doi: 10.1103/PhysRevLett.108.067204] [arxiv:1105.4196] [pdf] [ADS] IF: 7.943
  42. M. Lajkó, P. Sindzingre, K. Penc:
    Exact ground states with deconfined gapless excitations for the 3 leg spin-1/2 tube
    Phys. Rev. Lett. 108, 017205/1-5 (2012). [doi: 10.1103/PhysRevLett.108.017205] [arxiv:1107.5501] [pdf] [ADS] [ADS] IF: 7.943
  43. J. Romhányi, M. Lajkó, K. Penc:
    Zero- and finite-temperature mean field study of magnetic field induced electric polarization in Ba2CoGe2O7: The effect of the antiferroelectric coupling
    Phys. Rev. B 84, 224419/1-8 (2011). [doi: 10.1103/PhysRevB.84.224419] [arxiv:1110.0788] [pdf] [ADS] IF: 3.691
  44. J. Romhányi, F. Pollmann, K. Penc:
    Supersolid phase and magnetization plateaus observed in anisotropic spin-3/2 Heisenberg model on bipartite lattices
    Phys. Rev. B 84, 184427/1-14 (2011). [doi: 10.1103/PhysRevB.84.184427] [arxiv:1109.4078] [pdf] [ADS] IF: 3.691
  45. P. Corboz, A. M. Läuchli, K. Penc, M. Troyer, F. Mila:
    Simultaneous dimerization and SU(4) symmetry breaking of 4-color fermions on the square lattice
    Phys. Rev. Lett. 107, 215301/1-5 (2011). [doi: 10.1103/PhysRevLett.107.215301] [arxiv:1108.2857] [pdf] [ADS] IF: 7.370
  46. O. Sikora, N. Shannon, F. Pollmann, K. Penc, P Fulde:
    Extended quantum U(1)-liquid phase in a three-dimensional quantum dimer model
    Phys. Rev. B 84, 115129/1-20 (2011). [doi: 10.1103/PhysRevB.84.115129] [arxiv:1105.1322] [pdf] [ADS] IF: 3.691
  47. P. Ribeiro, P. D. Sacramento, K. Penc:
    Finite energy spectral function of an anisotropic 2D system of coupled Hubbard chains
    Phys. Rev. B 84, 045112/1-15 (2011). [doi: 10.1103/PhysRevB.84.045112] [arxiv:1102.0245] [pdf] [ADS] IF: 3.691
  48. A. Miyata, H. Ueda, Y. Ueda, Y. Motome, N. Shannon, K. Penc, S. Takeyama:
    Novel Magnetic Phases Revealed by Ultra-High Magnetic Field in the Frustrated Magnet ZnCr2O4
    J. Phys. Soc. Jpn. 80, 074709/1-6 (2011). [doi: 10.1143/JPSJ.80.074709] [arxiv:1105.4412] [pdf] [ADS] IF: 2.364
  49. J. Romhányi, K. Totsuka, K. Penc:
    The effect of Dzyaloshinskii-Moriya interactions on the phase diagram and magnetic excitations of SrCu2(BO3)2
    Phys. Rev. B 83, 024413/1-18 (2011). [doi: 10.1103/PhysRevB.83.024413] [arxiv:1010.4476] [pdf] [ADS] IF: 3.691
  50. T. A. Tóth, A. M. Läuchli, F. Mila, and K. Penc:
    Three-sublattice ordering of the SU(3) Heisenberg model of three-flavor fermions on the square and cubic lattices
    Phys. Rev. Lett. 105, 265301/1-4 (2010). [doi: 10.1103/PhysRevLett.105.265301] [arxiv:1009.1398] [pdf] [ADS] IF: 7.621
    Erratum Phys. Rev. Lett. 108, 029902(E) (2012). [doi: 10.1103/PhysRevLett.108.029902] [pdf]
  51. N. Shannon, K. Penc, Y. Motome:
    Nematic, vector-multipole, and plateau-liquid states in the classical O(3) pyrochlore antiferromagnet with biquadratic interactions in applied magnetic field
    Phys. Rev. B 81, 184409/1-24 (2010). [doi: 10.1103/PhysRevB.81.184409] [arxiv:1001.0270] [pdf] [ADS] IF: 3.772
  52. O. Sikora, F. Pollmann, N. Shannon, K. Penc, P. Fulde:
    Quantum liquid with deconfined fractional excitations in three dimensions
    Phys. Rev. Lett. 103, 247001/1-4 (2009). [doi: 10.1103/PhysRevLett.103.247001] [arxiv:0901.1057] [pdf] [ADS] IF: 7.328
  53. V. Lante, I. Rousochatzakis, K. Penc, O. Waldmann, F. Mila:
    Field-induced magnetoelastic instabilities at level crossings in antiferromagnetic molecular wheels
    Phys. Rev. B 79, 180412(R)/1-4 (2009). [doi: 10.1103/PhysRevB.79.180412] [arxiv:0810.3837] [pdf] [ADS] IF: 3.475
  54. J. M. P. Carmelo, D. Bozi, K. Penc:
    Dynamical functions of a 1D correlated quantum liquid
    J. Phys.: Condens. Matter 20, 415103/1-17 (2008). [doi: 10.1088/0953-8984/20/41/415103] [arxiv:0808.3001] [pdf] [ADS] IF: 1.900
  55. D. Bozi, J. M. P. Carmelo, K. Penc, P. D. Sacramento:
    The TTF finite-energy spectral features in photoemission of TTF-TCNQ: the Hubbard-chain description
    J. Phys.: Condens. Matter 20, 022205/1-5 (2008). [doi: 10.1088/0953-8984/20/02/022205] [arxiv:0712.0318] [pdf] [ADS] IF: 1.900
  56. K. Penc, J.-B. Fouet, S. Miyahara, O. Tchernyshyov, F. Mila:
    Ising phases of Heisenberg ladders in a magnetic field
    Phys. Rev. Lett. 99, 117201/1-4 (2007). [doi: 10.1103/PhysRevLett.99.117201] [arxiv:cond-mat/0703153] [pdf] [ADS] IF: 6.944
  57. D. Poilblanc, K. Penc, N. Shannon:
    Doped singlet-pair crystal in the Hubbard model on the checkerboard lattice
    Phys. Rev. B 75, 220503(R)/1-4 (2007). [doi: 10.1103/PhysRevB.75.220503] [cond-mat/0702367] [pdf] [ADS] IF: 3.172
  58. F. Mila, F. Vernay, A. Ralko, F. Becca, P. Fazekas, K. Penc:
    The emergence of Resonating Valence Bond physics in spin-orbital models
    J. Phys.: Condens. Matter 19, 145201 (2007). [doi: 10.1088/0953-8984/19/14/145201] [cond-mat/0609455] [pdf] [ADS] IF: 1.886
  59. K. Penc, N. Shannon, Y. Motome, H. Shiba:
    Symmetry considerations on the magnetization process of the Heisenberg model on the pyrochlore lattice
    J. Phys.: Condens. Matter 19, 145267 (2007). [doi: 10.1088/0953-8984/19/14/145267] [cond-mat/0609543] [pdf] [ADS] IF: 1.886
  60. P. Fazekas, K. Penc, K. Radnóczi, N. Barišic, H. Berger, L. Forró, S. Mitrović, A. Gauzzi, L. Demkó, I. Kézsmárki, G. Mihály:
    The electronic structure and the phases of BaVS3
    J. Magn. Magn. Mater. 310, 928-934 (2007). [doi: 10.1016/j.jmmm.2006.10.145] [cond-mat/0702510] [pdf] [ADS] IF: 1.704
  61. N. Shannon, H. Ueda, Y. Motome, K. Penc, H. Shiba, and H. Takagi:
    Half-magnetization plateaux in Cr spinels
    J. Phys.: Conf. Ser. 51, 31-38 (2006). [doi: 10.1088/1742-6596/51/1/005] [cond-mat/0609470] [pdf] [ADS] IF: 0
  62. A. M. Läuchli, F. Mila, and K. Penc:
    Quadrupolar Phases of the S=1 Bilinear-Biquadratic Heisenberg Model on the Triangular Lattice
    Phys. Rev. Lett. 97, 087205/1-4 (2006). [doi: 10.1103/PhysRevLett.97.087205] [cond-mat/0605234] [pdf] [ADS] IF: 7.072
    Erratum Phys. Rev. Lett. 97, 229901(E) (2006). [doi: 10.1103/PhysRevLett.97.229901] [pdf]
  63. J. M. P. Carmelo, and K. Penc:
    General spectral function expressions of a 1D correlated model
    Eur. Phys. J. B 51, 477-499 (2006). [doi: 10.1140/epjb/e2006-00235-5] [cond-mat/0311075?] [pdf] [ADS] IF: 1.651
  64. Y. Motome, K. Penc, and N. Shannon:
    Monte Carlo study of half-magnetization plateau and magnetic phase diagram in pyrochlore antiferromagnetic Heisenberg model
    J. Magn. Magn. Mater. 300, 57-61 (2006). [doi: 10.1016/j.jmmm.2005.10.032] [cond-mat/0506500] [pdf] [ADS] IF: 1.212
  65. J. M. P. Carmelo, K. Penc, P. D. Sacramento, M. Sing, and R. Claessen:
    The Hubbard model description of the TCNQ related singular features in photoemission of TTF-TCNQ
    J. Phys.: Condens. Matter 18, 5191-5212 (2006). [doi: 10.1088/0953-8984/18/22/019] [cond-mat/0307602?] [pdf] [ADS] IF: 2.038
  66. J. M. P. Carmelo, and K. Penc:
    Correlation-function asymptotic expansions: Universality of prefactors of the one-dimensional Hubbard model
    Phys. Rev. B 73, 113112/1-4 (2006). [doi: 10.1103/PhysRevB.73.113112] [cond-mat/0508704] [pdf] [ADS] IF: 3.107
  67. J. M. P. Carmelo, L.M. Martelo and K. Penc:
    The low-energy limiting behavior of the pseudofermion dynamical theory
    Nucl. Phys. B 737, 237-260 (2006). [doi: 10.1016/j.nuclphysb.2005.12.016] [cond-mat/????] [pdf] [ADS] IF: 5.199
  68. J. M. P. Carmelo and K. Penc:
    Spectral microscopic mechanisms and quantum phase transitions in a 1D correlated problem
    J. Phys.: Condens. Matter 18, 2881-2895 (2006). [doi: 10.1088/0953-8984/18/10/011] [cond-mat/0508209] [pdf] [ADS] IF: 2.038
  69. J. M. P. Carmelo, K. Penc, D. Bozi:
    Finite-energy spectral-weight distributions of a 1D correlated metal
    Nucl. Phys. B 725, 421-466 (2005). [doi: 10.1016/j.nuclphysb.2005.07.002] [cond-mat/0505601] [pdf] [ADS] IF: 5.522
    Erratum Nucl. Phys. B 737, 351-351 (2006). [doi: 10.1016/j.nuclphysb.2006.01.001] [pdf]
  70. Y. Motome, H. Tsunetsugu, T. Hikihara, N. Shannon and K. Penc:
    Interplay among Spin, Orbital and Lattice Degrees of Freedom in t2g Electron Systems with Edge-Sharing Network of Octahedra
    Prog. Theor. Phys. Suppl. 159, 314-318 (2005). [doi: 10.1143/PTPS.159.314] [cond-mat/0506598] [pdf] [ADS] IF: 0.751
  71. J.M.P. Carmelo, F. Guinea, K. Penc, P.D. Sacramento:
    Application of the pseudofermion dynamical theory to the properties of quasi-1D compounds
    Physica B 359, 1427-1429 (2005). [doi: 10.1016/j.physb.2005.01.437] [pdf] [ADS] IF: 0.796
  72. J. M. P. Carmelo, F. Guinea, K. Penc, P.D. Sacramento:
    Superconductivity driven by chain coupling and electronic correlations
    Europhys. Lett. 68, 839-845 (2004). [doi: 10.1209/epl/i2004-10273-7] [cond-mat/0401642] [pdf] [ADS] IF: 2.120
  73. K. Penc, N. Shannon, H. Shiba:
    Half-Magnetization Plateau Stabilized by Structural Distortion in the Antiferromagnetic Heisenberg Model on a Pyrochlore Lattice
    Phys. Rev. Lett. 93, 197203/1-4 (2004). [doi: 10.1103/PhysRevLett.93.197203] [cond-mat/0408397] [pdf] [ADS] IF: 7.218
  74. F. Vernay, K. Penc, P. Fazekas, F. Mila:
    Orbital degeneracy as a source of frustration in LiNiO2
    Phys. Rev. B 70, 014428/1-17 (2004). [doi: 10.1103/PhysRevB.70.014428] [cond-mat/0401122] [pdf] [ADS] IF: 3.075
  75. J. M. P. Carmelo, K. Penc, P. D. Sacramento, R. Claessen:
    New method for evaluation of finite-energy few-electron spectral function expressions
    J. Phys. IV France 114, 45-49 (2004). [doi: 10.1051/jp4:2004114008] [pdf] [ADS] IF: 0.294
  76. J. M. P. Carmelo, K. Penc, L. M. Martelo, P. D. Sacramento, J. M. B. Lopes dos Santos, R. Claessen, M. Sing, U. Schwingenschlogl:
    One-Electron Singular Branch Lines of the Hubbard Chain
    Europhys. Lett. 67, 233-239 (2004). [doi: 10.1209/epl/i2004-10111-0] [cond-mat/0404618] [pdf] [ADS] IF: 2.120
  77. N. Shannon, G. Misguich, K. Penc:
    Cyclic exchange, isolated states and spinon deconfinement in an XXZ Heisenberg model on the checkerboard lattice
    Phys. Rev. B 69, 220403(R)/1-4 (2004). [doi: 10.1103/PhysRevB.69.220403] [cond-mat/0403729] [pdf] [ADS] IF: 3.075
  78. N. Shannon, B. Schmidt, K. Penc, P. Thalmeier:
    Finite temperature properties and frustrated ferromagnetism in a square lattice Heisenberg model
    Eur. Phys. J. B 38, 599-616 (2004). [doi: 10.1140/epjb/e2004-00156-3] [cond-mat/0312160] [pdf] [ADS] IF: 1.426
  79. J. M. P. Carmelo, J. M. Roman, K. Penc:
    Charge and Spin Quantum Fluids Generated by Many-Electron Interactions
    Nuclear Physics B 683 [FS], 387-422 (2004). [doi: 10.1016/j.nuclphysb.2004.01.036] [cond-mat/0302044] [pdf] [ADS] IF: 5.819
  80. K. Penc, M. Mambrini, P. Fazekas, F. Mila:
    Quantum phase transition in the SU(4) spin-orbital model on the triangular lattice
    Phys. Rev. B 68, 012408/1-4 (2003). [doi: 10.1103/PhysRevB.68.012408] [cond-mat/0212211] [pdf] [ADS] IF: 2.962
  81. K. Penc, B. S. Shastry:
    Exact spectral functions of a non-Fermi liquid in one dimension
    Phys. Rev. B 65, 155110/1-7 (2002). [doi: 10.1103/PhysRevB.65.155110] [cond-mat/0109339] [pdf] [ADS] IF: 3.327
  82. P. Fulde, K. Penc, N. Shannon:
    Fractional charges in pyrochlore lattices
    Annalen der Physik 11, 892-900 (2002). [doi: 10.1002/1521-3889(200212)11:12<892::AID-ANDP892>3.0.CO;2-J] [cond-mat/0211034] [pdf] [ADS] IF: 1.119
  83. P. Fazekas, K. Penc, H. Berger, L. Forró, Sz. Csonka, I. Kézsmárki, G. Mihály:
    BaVS3: from spin gap insulator to non-Fermi-liquid
    Physica B 312-313, 694-695 (2002). [doi: 10.1016/S0921-4526(01)01498-3] [pdf] [ADS] IF: 0.609
  84. F. Mila, K. Penc:
    Model calculations for 1D correlated systems
    J. Electron Spectrosc. 117, 451-467 (2001). [doi: 10.1016/S0368-2048(01)00269-9] [pdf] IF: 1.259
  85. G. Mihály, I. Kézsmárki, F. Zámborszky, M. Miljak, K. Penc, P. Fazekas, H. Berger, L. Forró:
    Orbitally driven spin pairing in the three-dimensional nonmagnetic Mott insulator BaVS3: Evidence from single-crystal studies
    Phys. Rev. B 61, R7831-R7834 (2000). [doi: 10.1103/PhysRevB.61.R7831] [cond-mat/9911122] [pdf] [ADS] IF: 3.065
  86. L. Forró, R. Gaál, H. Berger, P. Fazekas, K. Penc, I. Kézsmárki, G. Mihály:
    Pressure induced quantum critical point and non-Fermi-liquid behavior in BaVS3
    Phys. Rev. Lett. 85, 1938-1941 (2000). [doi: 10.1103/PhysRevLett.85.1938] [cond-mat/0001371] [pdf] [ADS] IF: 6.462
  87. K. Penc, W. Stephan:
    Dynamical correlations in one-dimensional charge-transfer insulator
    Phys. Rev. B 62, 12707-12714 (2000). [doi: 10.1103/PhysRevB.62.12707] [cond-mat/0009357] [pdf] [ADS] IF: 3.065
  88. K. Penc, R. Lacaze:
    spl(2,1) dynamical supersymmetry and suppression of ferromagnetism in flat-band double-exchange models
    Europhys. Lett. 48, 561-567 (1999). [doi: 10.1209/epl/i1999-00520-y] [cond-mat/0009358] [pdf] [ADS] IF: 2.214
  89. R. Neudert, M. S. Golden, M. Knupfer, S. Haffner, J. Fink, S. L. Drechsler, J. Malek, H. Rosner, R. Hayn, K. Ruck, G. Krabbes, W. Stephan, K. Penc, V. Y. Yushankhai, C. Waidacher, J. Richter, K. W. Becker, T. Osafune, N. Motoyama, H. Eisaki, S. Uchida:
    The electronic structure of one- and two-dimensional cuprates from high-energy spectroscopy
    Physica C 317-318, 312-319 (1999). [doi: 10.1016/S0921-4534(99)00074-X] [pdf] [ADS] IF: 1.114
  90. H. Shiba, K. Penc, F. Mila:
    Strong coupling approach to one-dimensional Hubbard model and related lattice models
    Int. J. Mod. Phys. B 13, 731-740 (1999). [doi: 10.1142/S021797929900062X] [pdf missing] [ADS] IF: 0.660
  91. P. Millet, C. Satto, J. Bonvoisin, B. Normand, K. Penc, M. Albrecht, F. Mila:
    Magnetic properties of the coupled ladder system MgV2O5
    Phys. Rev. B 57, 5005-5008 (1998). [doi: 10.1103/PhysRevB.57.5005] [cond-mat/9802029] [pdf] [ADS] IF: 2.842
  92. R. Neudert, M. Knupfer, M. S. Golden, J. Fink, W. Stephan, K. Penc, N. Motoyama, H. Eisaki, S. Uchida:
    Manifestation of spin-charge separation in the dynamic dielectric response of one-dimensional Sr2CuO3
    Phys. Rev. Lett. 81, 657-660 (1998). [doi: 10.1103/PhysRevLett.81.657] [cond-mat/9806257] [pdf] [ADS] IF: 6.017
  93. J. Favand, S. Haas, K. Penc, F. Mila, E. Dagotto:
    Spectral functions of one-dimensional models of correlated electrons
    Phys. Rev. B 55, R4859-R4862 (1997). [doi: 10.1103/PhysRevB.55.R4859] [cond-mat/9611223] [pdf] [ADS] IF: 2.880
  94. K. Penc, K. Hallberg, F. Mila, H. Shiba:
    Spectral functions of the 1D Hubbard model in the U→∞ limit: How to use the factorized wave function
    Phys. Rev. B 55, 15475-15488 (1997). [doi: 10.1103/PhysRevB.55.15475] [cond-mat/9701051] [pdf] [ADS] IF: 2.880
  95. K. Penc, M. Serhan:
    Finite-temperature spectral functions of strongly correlated one-dimensional electron systems
    Phys. Rev. B 56, 6555-6558 (1997). [doi: 10.1103/PhysRevB.56.6555] [cond-mat/9704233] [pdf] [ADS] IF: 2.880
  96. B. Normand, K. Penc, M. Albrecht, F. Mila:
    Phase diagram of the S=1/2 frustrated coupled ladder system
    Phys. Rev. B 56, R5736-R5739 (1997). [doi: 10.1103/PhysRevB.56.R5736] [cond-mat/9703214] [pdf] [ADS] IF: 2.880
  97. B. Normand, K. Penc, M. Albrecht, F. Mila:
    Phase diagram of the S=1/2 frustrated double ladder system
    Physica C 282, 1117-1118 (1997). [doi: 10.1016/S0921-4534(97)00673-4] [pdf] [ADS] IF: 2.199
  98. F. Mila, K. Penc:
    Spectral-Function and Self-Energy of the One-Dimensional Hubbard-Model in the U→∞ Limit
    Z. Physik B 103, 201-203 (1997). [doi: 10.1007/s002570050359] [cond-mat/9702237] [pdf] [ADS] IF: 1.591
  99. K. Penc, K. Hallberg, F. Mila, H. Shiba:
    Shadow band in the one-dimensional infinite-U Hubbard model
    Phys. Rev. Lett. 77, 1390-1393 (1996). [doi: 10.1103/PhysRevLett.77.1390] [cond-mat/9512152] [pdf] [ADS] IF: 6.477
  100. K. Penc, H. Shiba, F. Mila, T. Tsukagoshi:
    Ferromagnetism in multi-band Hubbard models: From weak to strong Coulomb repulsion
    Phys. Rev. B 54, 4056-4067 (1996). [doi: 10.1103/PhysRevB.54.4056] [cond-mat/9603042] [pdf] [ADS] IF: 2.975
  101. W. Stephan, K. Penc:
    Dynamical density-density correlations in one-dimensional Mott insulators
    Phys. Rev. B 54, R17269-R17272 (1996). [doi: 10.1103/PhysRevB.54.R17269] [cond-mat/9609231] [pdf] [ADS] IF: 2.975
  102. K. Penc, F. Mila, H. Shiba:
    Spectral Function of One-Dimensional Strongly Correlated Electrons
    J. Korean Phys. Soc. (Proc. Suppl.) 29, S85-S91 (1996).] [doi: 10.3938/jkps.29.85] [pdf] IF: 0.337
  103. K. Penc, H. Shiba:
    Propagating S=1/2 particles in S=1 Haldane gap systems
    Phys. Rev. B 52, R715-R718 (1995). [doi: 10.1103/PhysRevB.52.R715] [cond-mat/9502085] [pdf] [ADS] IF: 2.834
  104. F. Mila, K. Penc:
    Susceptibility of the one-dimensional dimerized Hubbard model
    Phys. Rev. B 51 (Rap. Comm.), 1997-2000 (1995). [doi: 10.1103/PhysRevB.51.1997] [cond-mat/9502073] [pdf] [ADS] IF: 2.834
  105. K. Penc, F. Mila, H. Shiba:
    Spectral function of the 1D Hubbard model in the U→∞ limit
    Phys. Rev. Lett. 75, 894-897 (1995). [doi: 10.1103/PhysRevLett.75.894] [cond-mat/9501085] [pdf] [ADS] IF: 6.297
  106. F. Mila, K. Penc:
    One dimensional properties of the Bechgaard salts
    Synthetic Metals 70, 997-1000 (1995). [doi: 10.1016/0379-6779(94)02734-G] [pdf] IF: 1.583
  107. K. Penc, F. Mila:
    Phase diagram of the one-dimensional extended Hubbard model with attractive and/or repulsive interactions at quarter filling
    Phys. Rev. B 49, 9670-9678 (1994). [doi: 10.1103/PhysRevB.49.9670] [cond-mat/9311066] [pdf] [ADS] IF: 3.187
  108. K. Penc, A. Zawadowski:
    Theory of orbital Kondo effect with assisted hopping in strongly correlated electron systems: Parquet equations, superconductivity, mass enhancement
    Phys. Rev. B 50, 10578-10597 (1994). [doi: 10.1103/PhysRevB.50.10578] [cond-mat/9401029] [pdf] [ADS] IF: 3.187
  109. K. Penc, F. Mila:
    Charge gap in the one-dimensional dimerized Hubbard Model at quarter filling
    Phys. Rev. B 50, 11429-11445 (1994). [doi: 10.1103/PhysRevB.50.11429] [cond-mat/9406073] [pdf] [ADS] IF: 3.187
  110. K. Penc, J. Sólyom:
    The one-dimensional Hubbard model in magnetic field and the multicomponent Tomonaga-Luttinger model
    Phys. Rev. B 47, 6273-6292 (1993). [doi: 10.1103/PhysRevB.47.6273] [pdf] [ADS] IF: 3.159
  111. K. Penc, F. Mila:
    One-dimensional electronic properties of the Bechgaard salts
    J. Phys. Coll. IV 3, 155-158 (1993). [doi: 10.1051/jp4:1993231] [pdf] IF: 0.138
  112. F. Woynarovich, K. Penc:
    Novel magnetic properties of the Hubbard chain with an attractive interaction
    Z. Physik B 85, 269-280 (1991). [doi: 10.1007/BF01313229] [pdf] [ADS] IF: 2.336
  113. K. Penc, J. Sólyom:
    Momentum distribution near k=3kF in the Tomonaga-Luttinger model
    Phys. Rev. B 44, 12690-12700 (1991). [doi: 10.1103/PhysRevB.44.12690] [pdf] [ADS] IF: 3.535
  114. A. Zawadowski, K. Penc, G. T. Zimányi:
    Orbital Kondo effect due to assisted hopping: superconductivity, mass enhancement in copper oxides with apical oxygen
    Progr. Theor. Phys. Suppl. 106, 11 (1991). [doi: 10.1143/PTPS.106.11] [pdf] [ADS] IF: 0.873
  115. K. Penc, J. Sólyom:
    Scaling theory of interacting light and heavy fermions in one dimension
    Phys. Rev. B 41, 704-716 (1990). [doi: 10.1103/PhysRevB.41.704] [pdf] [ADS] IF: 3.620
  116. P. Fazekas, K. Penc:
    Generalized Gutzwiller Ansatz for the half-filled Hubbard chain
    Int. J. of Mod. Phys. B 2, 1021-1034 (1988). [doi: 10.1142/S0217979288000858] [pdf] [ADS] IF: 0
    117. (*: IF of previous year)

Conference Proceedings in Books

  1. K. Penc, W. Stephan:
    Spin-charge separation in the Sr2CuO3 and SrCuO2 chain materials
    in `Open Problems in Strongly Correlated Electron Systems', eds. J. Bonca et al., p. 303-309, (Kluwer Academic Publisher, 2001).
  2. P. Fazekas, H. Berger, L. Forró, R. Gaál, I. Kézsmárki, G. Mihály, M. Miljak, K. Penc, F. Zámborszky:
    Non-magnetic Mott insulating phase and anomalous conducting state in barium vanadium trisulphide
    in `Open Problems in Strongly Correlated Electron Systems', eds. J. Bonca et al., p. 387-392, (Kluwer Academic Publisher, 2001).
  3. F. Mila, K. Penc:
    Correlation Effects in Quasi-One Dimensional Organic Conductors: A Microscopic Point of View
    in `Correlated Fermions and Transport in Mesoscopic Systems', ed. T. Martin, G. Montambaux and J. Tran Thanh Van, p. 105 (Frontieres, 1996).
  4. J. Sólyom, K. Penc:
    Relationship among the Hubbard, t-J and Tomonaga-Luttinger models
    In `Recent Progress in Many Body Theories', Vol. 4. Eds. E. Schachinger, H. Mitter and M. Sormann, Plenum Press, 1995 pp 263-270.