Interplay among spin, orbital and lattice degrees of freedom in t 2g electron systems with edge-sharing network of octahedra

Yukitoshi Motome, Hirokazu Tsunetsugu, Toshiya Hikihara, Nic Shannon, Karlo Penc

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Transition metal oxides whose lattice structure has edge-sharing network of octahedra constitute a diverse group of intriguing materials besides compounds with corner-sharing octahedra such as perovskites. We present a theoretical investigation of the interplay among spin, orbital and lattice degrees of freedom in these materials. We focus on t2g electron systems where a keen competition among those degrees of freedom is expected to emerge under a relatively weak Jahn-Teller coupling. We study the interplay between spin and orbital degrees of freedom in vanadium spinels and titanium pyroxenes. We clarify the important role of the strong anisotropy in the orbital interactions due to the edge-sharing geometry. We also discuss the interplay between spin and lattice in chromium spinels focusing on the magnetization process under the external magnetic field.

Original languageEnglish
Pages (from-to)314-318
Number of pages5
JournalProgress of Theoretical Physics Supplement
Volume159
DOIs
Publication statusPublished - 2005

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degrees of freedom
orbitals
pyroxenes
electrons
perovskites
vanadium
metal oxides
chromium
titanium
transition metals
magnetization
anisotropy
geometry
magnetic fields
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Interplay among spin, orbital and lattice degrees of freedom in t 2g electron systems with edge-sharing network of octahedra. / Motome, Yukitoshi; Tsunetsugu, Hirokazu; Hikihara, Toshiya; Shannon, Nic; Penc, Karlo.

In: Progress of Theoretical Physics Supplement, Vol. 159, 2005, p. 314-318.

Research output: Contribution to journalArticle

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AU - Penc, Karlo

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