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Thermodynamic Properties of Spin Ladders with Cyclic Exchange

Alexander Buehler·Ute Loew·Kai P. Schmidt·Goetz S. Uhrig
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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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Alexander Buehler, Ute Loew, Kai P. Schmidt, Goetz S. Uhrig. 2002-10-30. Thermodynamic Properties of Spin Ladders with Cyclic Exchange. https://doi.org/10.1103/physrevb.67.134428

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