Some aspects of the phase diagram of double-exchange systems

被引：102

作者：

Arovas, DP ^{[1
]}

Guinea, F

机构：

[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[2] CSIC, Inst Ciencia Mat, E-28049 Madrid, Spain

来源：

PHYSICAL REVIEW B | 1998年 / 58卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.58.9150

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The phase diagram of doped manganate compounds La(1-x)A(x)MnO(3) (with divalent A) with small x is studied. We analyze an extension of the double-exchange model using the Schwinger boson formalism. Earlier work by de Gennes on the existence of a canted phase is reproduced, although this phase is shown to be unstable towards phase separation in a broad regime of physical interest. We numerically solve the mean-field equations for our model and exhibit its phase diagrams. [S0163-1829(98)01238-7].

引用

页码：9150 / 9155

页数：6

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