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2003 | 1 | 3 | 421-431
Tytuł artykułu

Electron spectral density of the half-filled Hubbard model in the atomic limit at finite temperature

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
We have calculated the spectral function and density of states of halffilled two-dimensional Hubbard model in the Hubbard-I approximation assuming an antiferromagnetic long range order at low temperature and compared results to the QMC data. It occurs that calculated functions are in a qualitative agreement with the QMC one. We have also shown that Neel ordered state dispersion has the similar form to the spin density wave one.
Wydawca

Czasopismo
Rocznik
Tom
1
Numer
3
Strony
421-431
Opis fizyczny
Daty
wydano
2003-09-01
online
2003-09-01
Twórcy
  • L. V. Kirensky Institute of Physics, Siberian Division, Russian Academy of Science, Akademgorodok, 660036, Krasnoyarsk, Russia
  • L. V. Kirensky Institute of Physics, Siberian Division, Russian Academy of Science, Akademgorodok, 660036, Krasnoyarsk, Russia, shneyder@iph.krasn.ru
Bibliografia
  • [1] J.C. Hubbard: “Electron correlations in narrow energy bands”, Proc. Roy. Soc. London, Vol. A 276, (1963), pp. 238. http://dx.doi.org/10.1098/rspa.1963.0204[Crossref]
  • [2] P.O. Zaitsev: “Diagram technique and gas approximation in the Hubbard model”, JETP, Vol. 70, (1976), pp. 1100.
  • [3] V.V. Val'kov and S.G. Ovchinnikov: Quasiparticles in strongly correlated systems, Siberian Branch of Russian Academy of science, Novosibirsk, 2001.
  • [4] C. Grober, R. Eder, W. Hanke: “Anomalous low-doping phase of the Hubbard model”, Phys. Rev.B, Vol. 62, (2000), pp. 4336. http://dx.doi.org/10.1103/PhysRevB.62.4336[Crossref]
  • [5] D.N. Zubarev, “Two-time temperature dependent Green function method in the statistic thermodynamics”, Usp. Fiz. Nauk, Vol. 71, (1960), pp. 71.
  • [6] J.C. Hubbard: “Electron correlations in narrow bands. An improved solution”, Proc. Roy. Soc., Vol. A 277, (1964), pp. 237.
  • [7] C. Castellany, C. Di Castro, D. Feinberg, J. Ranniger: “New model hamiltonian for the metal-insulator transition”, Phys. Rev. Let., Vol. 26, (1979), pp. 1957. http://dx.doi.org/10.1103/PhysRevLett.43.1957[Crossref]
  • [8] N. Bulut, D. J. Scalapino, S.R. White: “Electronic Properties of the Insulating Half-Filled Hubbard Model”, Phys. Rev. Let., Vol. 73, (1994), pp. 748. http://dx.doi.org/10.1103/PhysRevLett.73.748[Crossref]
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_BF02475853
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