Suppression of magnetic coupling by in-plane buckling in SrFeO 2

Kazumasa Horigane, Anna Llobet, Despina Louca

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

SrFeO2 is an insulating antiferromagnet with a remarkably high transition temperature in spite of its quasi-two-dimensional crystal structure. The magnetic exchange coupling is, however, very sensitive to a local mode involving transverse displacements of O and Fe, resulting in zigzag patterns of distortion. The buckling driven by rising temperatures is enhanced just as the Fe magnetic moment is reduced, implying a strong spin-lattice coupling. It is suggested that the undulations lead to orbital disorder by distorting the three possible paths to exchange interactions.

Original languageEnglish
Article number097001
JournalPhysical Review Letters
Volume112
Issue number9
DOIs
Publication statusPublished - Mar 4 2014
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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