Effect of pressure on the superconducting critical temperature of La[O0.89F0.11]FeAs and Ce[O0.88F0.12]FeAs

被引：45

作者：

Zocco, D. A. ^{[1
,2
]}

Hamlin, J. J. ^{[1
,2
]}

Baumbach, R. E. ^{[1
,2
]}

Maple, M. B. ^{[1
,2
]}

McGuire, M. A. ^{[3
]}

Sefat, A. S. ^{[3
]}

Sales, B. C. ^{[3
]}

Jin, R. ^{[3
]}

Mandrus, D. ^{[3
]}

Jeffries, J. R. ^{[4
]}

Weir, S. T. ^{[4
]}

Vohra, Y. K. ^{[5
]}

机构：

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

[2] Univ Calif San Diego, Inst Pure & Appl Phys Sci, La Jolla, CA 92093 USA

[3] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

[4] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

[5] Univ Alabama Birmingham, Dept Phys, Birmingham, AL 35294 USA

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2008年 / 468卷 / 21期

关键词：

High pressure; Designer diamonds; Superconductivity; Oxypnictide;

D O I：

10.1016/j.physc.2008.06.010

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have performed several high-pressure resistivity experiments on the recently discovered superconductors La[O0.89F0.11]FeAs and Ce[O0.88F0.12]FeAs. At ambient pressure, these materials have superconducting onset temperatures T-c of 28 K and 44 K, respectively. While the T-c of La[O0.89F0.11]FeAs goes through a maximum between 10 and 68 kbar, in qualitative agreement with a recent report by Takahashi et al., the T-c of Ce[O0.88F0.12]FeAs decreases monotonically over the measured pressure range. At 265 kbar, the Tc of the cerium-based compound has been suppressed below 1.1 K. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：2229 / 2232

页数：4

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