Understanding the role of the local structure in the second order structural phase transition of La2-xAxCuO4 (A = Ba, Sr)

被引：0

作者：

Bozin, ES ^{[1
]}

Billinge, SJL

Kwei, GH

机构：

[1] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[2] Michigan State Univ, Ctr Fundamental Mat Res, E Lansing, MI 48824 USA

[3] Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

SOLID STATE PHENOMENA | 1998年 / 61-2卷

关键词：

local structure; structural phase transition; pair distribution function; neutron powder diffraction; high temperature superconductors;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied the local atomic structure of La(2-x)A(x)CuO(4) (A=Ba, Sr) through the high-temperature tetragonal (HTT) to low temperature orthorhombic (LTO) structural phase transition using the atomic pair distribution function technique. Although long-range ordered tilts disappear in the average structure, we show that significant local tilts persist. We propose an order-disorder model which reconciles both the local and long-range structural observations.

引用

页码：271 / 274

页数：4

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