Soft-acoustic phonon mode at the Jahn-Teller transition in LaMnO3

被引：6
作者：
Saint-Paul, M [1 ]
Lejay, P [1 ]
机构：
[1] CNRS, Ctr Rech Tres Basses Temp, F-38042 Grenoble, France
来源：
PHYSICA B-CONDENSED MATTER | 2004年 / 352卷 / 1-4期
关键词：
Jahn-Teller effect; structural transition; elastic softening;
D O I：
10.1016/j.physb.2004.08.014
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The elastic properties of LaMnO3 have been investigated by means of ultrasonic measurements. The longitudinal elastic constant C-22(Ort) propagating along the b-axis exhibits a large softening around the Jahn Teller transition T(JT)similar to750K accompanied by the orbital order-disorder transition (C) 2004 Elsevier B.V. All rights reserved.
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页码：353 / 357
页数：5
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