High-pressure resistivity measurements on the β-pyrochlore oxide KOs2O6

被引：2
|
作者：
Ogusu, Hiroki [1 ]
Takeshita, Nao [2 ]
Yamaura, Jun-ichi [1 ]
Okamoto, Yoshihiko [1 ]
Hiroi, Zenji [1 ]
机构：
[1] Univ Tokyo, ISSP, Chiba 2778581, Japan
[2] Natl Inst Adv Ind Sci & Technol, Nanoelect Res Inst NeRI, Tsukuba, Ibaraki 3058562, Japan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2010年 / 470卷
关键词：
Pyrochlore oxide; Superconductor; High pressure; Resistivity; Rattling;
D O I：
10.1016/j.physc.2009.11.169
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
High-pressure resistivity measurements are performed on a high-quality single crystal of the beta-pyrochlore oxide KOs2O6 in the pressure range of 1.0 to 5.0 GPa. The superconducting transition temperature T-c increases slightly from 9.6 K at ambient pressure to 9.8 K at 1.0 GPa, decreases gradually with increasing pressure, and suddenly drops from 6.5 K to 3.2 K across P-s = 3.6 GPa. The drop of T-c at P-s is likely to be related to a change in the rattling vibration associated with a symmetry-breaking structural transition. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：S738 / S739
页数：2
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