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Abstracts
We analyse a behaviour of the order parameter and specific heat of the Falicov-Kimball model (FKM) on the Bethe lattice using the Dynamical Mean Field Theory (DMFT) formalism, which provides the exact solution in the limit of large spatial dimensions. In the large U limit, the FKM maps onto the effective Ising model, with the order parameter of the Curie-Weiss form. However, in the small U limit the order parameter takes on unusual shape, with a sharp reduction near T ≈ T_{c}/2. We focus our investigation on a crossover between these two limits, thus we perform our calculations for a set of intermediate and small values of U. We find the overall behaviour of the order parameter and specific heat as a function of temperature to be quite anomalous.
Discipline
Journal
Year
Volume
Issue
Pages
369-371
Physical description
Dates
published
2018-03
Contributors
author
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422 Wrocław, Poland
author
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422 Wrocław, Poland
References
- [1] L.M. Falicov, J.C. Kimball, Phys. Rev. Lett. 22, 997 (1969), doi: 10.1103/PhysRevLett.22.997
- [2] P.G.J. van Dongen, Phys. Rev. B 45, 2267 (1992), doi: 10.1103/PhysRevB.45.2267
- [3] Ling Chen, J.K. Freericks, B.A. Jones, Phys. Rev. B 68, 153102 (2003), doi: 10.1103/PhysRevB.68.153102
- [4] M. Maśka, K. Czajka, phys. stat. sol.(b) 242, 479 (2005), doi: 10.1002/pssb.200460067
- [4a] M. Maśka, K. Czajka, Phys. Rev. B 74, 035109 (2006), doi: 10.1103/PhysRevB.74.035109
- [5] J.K. Freericks, Ch. Gruber, N. Macris, Phys. Rev. B 60, 1617 (1999), doi: 10.1103/PhysRevB.60.1617
- [5a] A. Shvaika, J.K. Freericks, Phys. Rev. B 67, 153103 (2003), doi: 10.1103/PhysRevB.67.153103
- [5b] R. Lemański, K. Ziegler, Phys. Rev. B 89, 075104 (2014), doi: 10.1103/PhysRevB.89.075104
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv133n3p010kz