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Inhomogeneous charge ordering of a spinless fermionic system on the Bethe lattice

F. MANCINI1, F. P. MANCINI2, A. NADDEO1,*

Affiliation

  1. Dipartimento di Fisica “E. R. Caianiello”- Unità CNISM di Salerno, Università di Salerno, 84081 Baronissi (SA), Italy
  2. Dipartimento di Fisica and Sezione INFN, Università di Perugia, 06123 Perugia, Italy

Abstract

We show that a system of spinless Fermi particles, localized on the sites of the Bethe lattice with coordination number z and interacting through a repulsive nearest-neighbor interaction, exhibits a phase transition to a charge-ordered state. The phase diagram in the n-T plane is derived. Relevant thermodynamic quantities, such as the free energy, the specific heat, the entropy and the compressibility are analyzed in detail..

Keywords

Spinless fermionic system, Bethe lattice.

Submitted at: April 1, 2008
Accepted at: July 1, 2008

Citation

F. MANCINI, F. P. MANCINI, A. NADDEO, Inhomogeneous charge ordering of a spinless fermionic system on the Bethe lattice, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 7, pp. 1694-1699 (2008)