Thermodynamic Properties of Spin Ladders with Cyclic Exchange

Details Thermodynamic Properties of Spin Ladders with Cyclic Exchange Thermodynamic Properties of Spin Ladders with Cyclic Exchange

2002-10-30

arxiv.org/abs/cond-mat/0210669v1

PRB, Vol. 67, 134428 (2003)

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 7 figures

Scientific paper

10.1103/PhysRevB.67.134428

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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