Pressure Induced Static Magnetic Order in Superconducting FeSe1-x
Pressure Induced Static Magnetic Order in Superconducting FeSe1-x
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DOI：
10.1103/physrevlett.104.087003
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发表时间：
2010-02-26
影响因子：
8.6
通讯作者：
Khasanov, R.
中科院分区：
文献类型：
--
作者：
Bendele, M.;Amato, A.;Khasanov, R.
利用交流磁化和介子自旋对FeSe1-x在高达1.4 GPa压力下的电子相图进行了详细的研究。在接近或等于0.8 GPa的压力下，非磁性和超导FeSe1-x进入一个区域，该区域在T-c以上实现静态磁序，体超导性与T-c以下的磁序共存并在短长度尺度上竞争。在更高的压力下，磁性和超导转变温度以及相应的序参量都得到了提高。这些特殊的性质使FeSe1-x成为目前广泛研究的最有趣的超导系统之一。
We report on a detailed investigation of the electronic phase diagram of FeSe1-x under pressures up to 1.4 GPa by means of ac magnetization and muon-spin rotation. At a pressure similar or equal to 0.8 GPa the nonmagnetic and superconducting FeSe1-x enters a region where static magnetic order is realized above T-c and bulk superconductivity coexists and competes on short length scales with the magnetic order below T-c. For even higher pressures an enhancement of both the magnetic and the superconducting transition temperatures as well as of the corresponding order parameters is observed. These exceptional properties make FeSe1-x to be one of the most interesting superconducting systems investigated extensively at present.