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Dynamically generated dimension reduction and crossover in a spin orbital model

Theja. N. De Silva·Michael Ma·Fu Chun Zhang
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Abstract

We study a spin orbital model in which the spin-spin interaction couples linearly to the orbital isospin. Fluctuations drive the transition from paramagnetic state to C type ordered state into a strongly first order one, as observed in $V_2O_3$. At T=0, there is a FOCS to FOGS transition. Close to the transition point, the system shows dynamically generated dimension reduction and crossover, resulting in one or more spin reentrant transitions.

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Theja. N. De Silva, Michael Ma, Fu Chun Zhang. 2004-03-15. Dynamically generated dimension reduction and crossover in a spin orbital model. https://doi.org/10.1103/physrevb.70.100405

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