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Thermodynamic Properties of Spin Ladders with Cyclic Exchange

Authors
  • Buehler, Alexander
  • Loew, Ute
  • Schmidt, Kai P.
  • Uhrig, Goetz S.
Type
Published Article
Publication Date
Oct 30, 2002
Submission Date
Oct 30, 2002
Identifiers
DOI: 10.1103/PhysRevB.67.134428
arXiv ID: cond-mat/0210669
Source
arXiv
License
Unknown
External links

Abstract

By high temperature series expansion and exact complete diagonalization the magnetic susceptibility chi(T) and the specific heat C(T) of a two-leg S=1/2 ladder with cyclic (4-spin) exchange are computed. Both methods yield convincing results for not too small temperatures. We find that a small amount of cyclic exchange influences the thermodynamical properties significantly. Our results can serve as reliable basis for an efficient analysis of experimental data

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