Electron-lattice coupling, orbital stability, and the phase diagram of Ca2-xSrxRuO4 -: art. no. 195120

被引：23

作者：

Okamoto, S ^{[1
]}

Millis, AJ ^{[1
]}

机构：

[1] Columbia Univ, Dept Phys, New York, NY 10027 USA

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 19期

基金：

日本学术振兴会; 美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.70.195120

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hartree-Fock calculations are presented of a theoretical model describing the (Sr,Ca)(2)RuO4 family of compounds. Both commensurate and incommensurate magnetic states are considered, along with orbital ordering and the effect of lattice distortions. The concept of interaction-driven orbital stability is introduced. A coherent description of the observed phase diagram is obtained involving relatively weak correlations and an insulating state stabilized by lattice distortions.

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页码：1 / 7

页数：7

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