Dynamically generated dimension reduction and crossover in a spin orbital model

Details Dynamically generated dimension reduction and crossover in a spin orbital model Dynamically generated dimension reduction and crossover in a spin orbital model

2004-03-15

arxiv.org/abs/cond-mat/0403370v1

Phys. Rev. B 70, 100405(R) (2004)

Physics

Condensed Matter

Strongly Correlated Electrons

Submitted to PRL. 4 pages and one figure

Scientific paper

10.1103/PhysRevB.70.100405

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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