Phase transitions in a spinless, extended Falicov-Kimball model on the triangular lattice

Abstract

A numerical diagonalization technique with canonical Monte-Carlo simulation algorithm is used to study the phase transitions from low temperature (ordered) phase to high temperature (disordered) phase of spinless Falicov-Kimball model on a triangular lattice with correlated hopping ($t^{\prime }$). It is observed that the low temperature ordered phases (i.e. regular, bounded and segregated) persist up to a finite critical temperature ($T_c$). In addition, we observe that the critical temperature decreases with increasing the correlated hopping in regular and bounded phases whereas it increases in the segregated phase. Single and multi peak patterns seen in the temperature dependence of specific heat ($C_v$) and charge susceptibility ($\chi$) for different values of parameters like on-site Coulomb correlation strength ($U$), correlated hopping ($t^{\prime }$) and filling of localized electrons ($n_f$) are also discussed.

6 pages, 5 figures

References in corpus (13)

• Superconductivity in Cu_xTiSe_2
• Evidence for an excitonic insulator phase in 1T-TiSe${}_2$
• Tuning the Charge Density Wave and Superconductivity in CuxTaS2
• Semimetal to semimetal charge density wave transition in 1T-TiSe${}_2$
• Emergence of Fermi pockets in an excitonic CDW melted novel superconductor
• Low-lying quasiparticle states and hidden collective charge instabilities in parent cobaltate superconductors (NaxCoO2)
• Thermodynamics of the two-dimensional Falicov-Kimball model: a classical Monte Carlo study
• GdI_2: A New Ferromagnetic Excitonic Solid?
• An extended Falicov-Kimball model on a triangular lattice
• Magnetic properties of doped GdI2
• Ground state phase diagram of a spinless, extended Falicov-Kimball model on the triangular lattice
• Thermodynamic studies of the two dimensional Falicov-Kimball model on a triangular lattice
• Phase transitions in the spinless Falicov-Kimball model with correlated hopping

Cited by in corpus (5)

• Study of ground state phases for spin-1/2 Falicov-Kimball model on a triangular lattice
• Orbital Magnetic Field Driven Metal-Insulator Transition in Spinless Extended Falicov-Kimball Model on A Triangular Lattice
• The Role of Intra- and Inter-site exchange correlations in the Extended Falicov-Kimball Model on a Triangular Lattice
• Metal-Insulator Transition and Band Magnetism in the Spin-$1/2$ Falicov-Kimball Model on A Triangular Lattice with External Magnetic Field
• Thermodynamic and topological phase diagrams of correlated topological insulators