Наукова електронна бібліотека
періодичних видань НАН України
періодичних видань НАН України
A Monte Carlo study of the Falicov–Kimball model in the perturbative regime
Репозиторій DSpace/Manakin
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A Monte Carlo study of the Falicov–Kimball model in the perturbative regime
Тема:
International Conference "Statistical Physics 2006. Condensed Matter: Theory and Application"
Інший ID:
PACS: 71.10.Hf, 75.10.Hk, 75.30.Kz, 75.40.Mg
Посилання:
A Monte Carlo study of the Falicov–Kimball model in the perturbative regime / G. Musiał, L. Dębski, J. Wojtkiewicz // Физика низких температур. — 2007. — Т. 33, № 9. — С. 1045–1048. — Бібліогр.: 8 назв. — англ.
Підтримка:
The authors wish to thank Professor R. Lemañski for
valuable discussions, the Poznañ Supercomputing and
Networking Center for the access to the supercomputers,
and the State Committee for Scientific Research for partial
financial support within the grants 4 T11F 014 24
(GM) and MERG-CT-2004 No 6348 (LD).
Дата:
2007
Переглядів:
718
Завантажень:
368
Анотація:
Finite-temperature properties of the Falicov–Kimball model on the square lattice have been studied in
the perturbative regime, i.e. for t/U << 1, where t is the hopping constant and U denotes the Coulomb interaction
strength. In our study, we have determined the phase diagram of the model in the second-order of the
perturbation theory, where the antiferromagnetic Ising model in the magnetic field emerges. In the fourth-order,
where our model constitutes the Ising model with more complicated frustrated antiferromagnetic interactions,
the sketch of the phase diagram was established. The Monte Carlo method was employed and the behavior
of Binder cumulants based on the order parameters was analyzed to determine the type of ordering
and phase boundaries in the diagram.
