Energy spectrum and thermodynamics of anisotropic spin-1/2 two-leg ladder

Cheranovskii V. O., Chovpan A. A., Ezerskaya E. V., Ozkan I.

INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY, vol.106, no.10, pp.2254-2261, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 106 Issue: 10
  • Publication Date: 2006
  • Doi Number: 10.1002/qua.20998
  • Journal Name: INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2254-2261
  • Middle East Technical University Affiliated: Yes

Abstract

We studied the energy spectrum and some finite temperature properties of two-leg spin-1/2 ladder with XXZ interactions in legs and rungs. It is shown that for a strong ferromagnetic interchain interaction, there is a first-order transition between ferromagnetic and nonmagnetic phases. The anisotropic ladder in the magnetic field may have up to four low-temperature maxima in the temperature dependence of specific heat. (c) 2006 Wiley Periodicals, Inc.