Lattice Instability and Competing Spin Structures in the Double Perovskite Insulator Sr2FeOsO6

被引：99

作者：

Paul, Avijit Kumar ^{[1
,2
]}

Reehuis, Manfred ^{[3
]}

Ksenofontov, Vadim ^{[4
]}

Yan, Binghai ^{[1
]}

Hoser, Andreas ^{[3
]}

Toebbens, Daniel M. ^{[3
]}

Abdala, Paula M. ^{[5
]}

Adler, Peter ^{[1
]}

Jansen, Martin ^{[1
,2
]}

Felser, Claudia ^{[1
,4
]}

机构：

[1] Max Planck Inst Chem Phys Fester Stoffe, D-01187 Dresden, Germany

[2] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

[3] Helmholtz Zentrum Mat & Energie, D-14109 Berlin, Germany

[4] Johannes Gutenberg Univ Mainz, Inst Anorgan Chem & Analyt Chem, D-55128 Mainz, Germany

[5] SNBL ESRF, F-38042 Grenoble 9, France

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 16期

基金：

欧洲研究理事会;

关键词：

MAGNETIC-PROPERTIES; CRYSTAL-STRUCTURE; MAGNETORESISTANCE; TEMPERATURE;

D O I：

10.1103/PhysRevLett.111.167205

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The semiconductor Sr2FeOsO6, depending on temperature, adopts two types of spin structures that differ in the spin sequence of ferrimagnetic iron-osmium layers along the tetragonal c axis. Neutron powder diffraction experiments, Fe-57 Mossbauer spectra, and density functional theory calculations suggest that this behavior arises because a lattice instability resulting in alternating iron-osmium distances fine-tunes the balance of competing exchange interactions. Thus, Sr2FeOsO6 is an example of a double perovskite, in which the electronic phases are controlled by the interplay of spin, orbital, and lattice degrees of freedom.

引用

页数：5

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