ELECTRON MECHANISM FOR THE STRUCTURAL PHASE-TRANSITIONS IN LA2-XBAXCUO4

被引：80

作者：

BARISIC, S ^{[1
]}

ZELENKO, J ^{[1
]}

机构：

[1] SOUR RADE KONCAR, INST ELECTROTECH, Zagreb, YUGOSLAVIA

来源：

SOLID STATE COMMUNICATIONS | 1990年 / 74卷 / 05期

关键词：

D O I：

10.1016/0038-1098(90)90504-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The low temperature tilt of the CuO6 octahedra in La2-xBaxCuO4 with x≈0.12 was recently characterized and shown to couple strongly to the carriers. Various couplings and in particular the coupling of the tilt to the oxygen-oxygen in-plane CDW, are briefly discussed. There is an analogy in this respect between the low temperature tilt mode and the antisymmetric (340 cm-1) Raman mode in the 123 compounds. It is argued that the coupling of oxygen-oxygen in-plane CDW to the low temperature tilt tends to stabilize the observed low temperature tetragonal phase. © 1990.

引用

页码：367 / 370

页数：4

共 26 条

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