Electronic origin of magnetic and orbital ordering in insulating LaMnO3

被引：221

作者：

Feiner, LF

Oles, AM

机构：

[1] Philips Res Labs, NL-5656 AA Eindhoven, Netherlands

[2] Univ Utrecht, Inst Theoret Phys, NL-3584 CC Utrecht, Netherlands

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

[4] Jagiellonian Univ, Inst Phys, PL-30059 Krakow, Poland

来源：

PHYSICAL REVIEW B | 1999年 / 59卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.59.3295

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We derive a spin-orbital model for insulating LaMnO3 which fulfills the SU(2) symmetry of S=2 spins at Mn3+ ions. It includes the complete e(g) and t(2g) superexchange which follows from a realistic Mn2+ multiplet structure in cubic site symmetry, and the Jahn-Teller-induced orbital interactions. We show that the magnetic ordering observed in LaMnO3 is stabilized by a purely electronic mechanism due to the e(g) superexchange alone, and provides a unique and quantitatively correct explanation of the observed transition temperature and the anisotropic exchange interactions. [S0163-1829(99)14901-4].

引用

页码：3295 / 3298

页数：4

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