Thermodynamic studies of the two dimensional Falicov-Kimball model on a triangular lattice

被引：10
|
作者：
Yadav, U. K. [1 ]
Maitra, T. [1 ]
Singh, I. [1 ]
机构：
[1] Indian Inst Technol Roorkee, Dept Phys, Roorkee 247667, Uttarakhand, India
来源：
EUROPEAN PHYSICAL JOURNAL B | 2011年 / 84卷 / 03期
关键词：
CHARGE-DENSITY-WAVE; PHASE-SEPARATION; GROUND-STATES; SUPERCONDUCTIVITY; SEGREGATION;
D O I：
10.1140/epjb/e2011-20670-3
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Thermodynamic properties of the spinless Falicov-Kimball model are studied on a triangular lattice using numerical diagonalization technique with Monte-Carlo simulation algorithm. Discontinuous metal-insulator transition is observed at finite temperature. Unlike the case of square lattice, here we observe that the finite temperature effect is not able to smear out the discontinuous metal-insulator transition seen in the ground state. Calculation of specific heat (C (v) ) shows single and double peak structures for different values of parameters like on-site correlation strength (U), f-electron energy (E (f) ) and temperature.
引用
收藏
页码：365 / 370
页数：6
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