Jahn-Teller effect and superexchange in half-doped manganites

被引：2

作者：

Sikóra, O ^{[1
]}

Oles, AM ^{[1
]}

机构：

[1] Jagiellonian Univ, Marian Smoluchowski Inst Phys, PL-30059 Krakow, Poland

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2003年 / 236卷 / 02期

关键词：

D O I：

10.1002/pssb.200301684

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We investigate the stability of the charge exchange (CE) phase within a microscopic model which describes a single plane as in La0.5Sr1.5MnO4. The model includes Coulomb interactions (on-site and intersite), the Jahn-Teller term and the superexchange interactions due to e(g) and t(2g) electrons. By investigating the phase diagram at T = 0 in mean-field approximation we conclude that the superexchange interactions can stabilize the CE phase, but only if they are stronger than estimated from spectroscopy.

引用

页码：380 / 383

页数：4

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