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

Theja N. De Silva, Michael Ma, Fu Chun Zhang

Research output: Contribution to journalArticle

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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 a paramagnetic state to a C-type-ordered state into a strongly first-order one, as observed in V2O3. At T=O, there is a ferro-orbital-C-spin to ferro-orbital-G-spin transition. Close to the transition point, the system shows dynamically generated dimension reduction and crossover, resulting in one or more spin reentrant transitions.

Original languageEnglish (US)
Pages (from-to)100405-1-100405-4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume70
Issue number10
DOIs
StatePublished - Sep 1 2004

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crossovers
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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Dynamically generated dimension reduction and crossover in a spin-orbital model. / De Silva, Theja N.; Ma, Michael; Zhang, Fu Chun.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 70, No. 10, 01.09.2004, p. 100405-1-100405-4.

Research output: Contribution to journalArticle

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AB - We study a spin-orbital model in which the spin-spin interaction couples linearly to the orbital isospin. Fluctuations drive the transition from a paramagnetic state to a C-type-ordered state into a strongly first-order one, as observed in V2O3. At T=O, there is a ferro-orbital-C-spin to ferro-orbital-G-spin 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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