Mott Transition of the Half-filled Hubbard Model in a Two-dimensional Frustrated Lattice
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https://doi.org/10.15625/0868-3166/23/1/538Keywords:
Mott-insulator, Hubbard model, geometrical frustration, coherent potential approximationAbstract
Using coherent potential approximation we study zero-temperature Mott transition of the half-filled Hubbard modelin a two-dimensional square lattice with geometrical frustration. It turns out that the geometrical frustration reduces the gap between the Hubbard bands. As a result the metallic phase is stabilized up to a fairly large value of the on-site Coulomb interaction. We found that the critical value $U_C$ for the Mott transition is enhanced by the geometrical frustration. Our results are in good agreement with the ones obtained by the single-site dynamical mean-field theory.
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P. Fulde, J. Phys.: Condens. Matter 16 (2004) S591.
DOI: https://doi.org/10.1088/0953-8984/16/11/004
J. S. Gardner, M. J. P. Gingras, and J. E. Greedan, Rev. Mod. Phys. 82
(2010) 53.
S. Kondo et al., Phys. Rev. Lett. 78 (1997) 3729.
DOI: https://doi.org/10.1103/PhysRevLett.78.3729
D. C. Johnston, J. Low. Temp. Phys. 25 (1976) 145.
DOI: https://doi.org/10.1007/BF00654827
T. Ohashi, T. Momoi, H. Tsunetsugu, and N. Kawakami, Phys. Rev. Lett.
(2008) 076402.
N. Bulut, W. Koshibae, and S. Maekawa, Phys. Rev. B68 (2003) 195103.
DOI: https://doi.org/10.1103/PhysRevB.68.235103
N. Bulut, W. Koshibae, and S. Maekawa, Phys. Rev. Lett. 95 (2005)
DOI: https://doi.org/10.1103/PhysRevLett.95.037001
B. H. Bernhard, B. Canals, and C Lacroix, J. Phys.: Condens. Matter 19
(2007) 145258.
T. Ohashi, T. Momoi, H. Tsunetsugu, N. Kawakami, Prog. Ther. Phys.
Suppl. bf 176 (2008) 97.
DOI: https://doi.org/10.1143/PTPS.176.97
S. Fujimoto, Phys. Rev. B64 (2001) 085102.
DOI: https://doi.org/10.1103/PhysRevB.64.085102
T. Yoshioka, A. Koga, and N. Kawakami, J. Phys. Soc. Jpn. 77 (2008)
DOI: https://doi.org/10.1143/JPSJ.77.104702
A. Kogaa, T. Yoshiokaa, N. Kawakamia, H. Yokoyamab, Physica C 460
(2007) 1070.
O. Parcollet, G. Biroli, and G. Kotliar, Phys. Rev. Lett. 92 (2004) 226402.
DOI: https://doi.org/10.1103/PhysRevLett.92.226402
B. Velicky, S. Kirkpatrick, and H. Ehrenreich, Phys. Rev. 175 (1968) 745.
DOI: https://doi.org/10.1103/PhysRev.175.747
F. Brouers, M. Cyrot, and F. Cyrot-Lackmann, Phys. Rev. B7 (1973)
DOI: https://doi.org/10.1103/PhysRevB.7.4370
F. Ducastelle, J. Phys. C: Solid State Phys. 7 (1974) 1795.
DOI: https://doi.org/10.1088/0022-3719/7/10/007
A. Georges, G. Kotliar,W. Krauth, and M. J. Rozenberg, Rev. Mod. Phys.
(1996) 13.
M. Rozenberg, R. Chitra, and G. Kotliar, Phys. Rev. Lett 83 (1999) 3498.
DOI: https://doi.org/10.1103/PhysRevLett.83.3498
T. Ohashi, N. Kawakami, and H. Tsunetsugu, Phys. Rev. Lett 97 (2006) 066401.
DOI: https://doi.org/10.1103/PhysRevLett.97.066401
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Published 10-04-2013
