Coexistence of multiphase superconductivity and ferromagnetism in lithiated iron selenide hydroxide [(Li1-xFex) OH]FeSe

被引：2

作者：

Urban, Christian ^{[1
,2
]}

Valmianski, Ilya ^{[1
,2
]}

Pachmayr, Ursula ^{[3
]}

Basaran, Ali C. ^{[1
,2
]}

Johrendt, Dirk ^{[3
]}

Schuller, Ivan K. ^{[1
,2
]}

机构：

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

[2] Univ Calif San Diego, Ctr Adv Nanosci, La Jolla, CA 92093 USA

[3] Ludwig Maximilians Univ Muenchen, Dept Chem, D-81377 Munich, Germany

来源：

PHYSICAL REVIEW B | 2018年 / 97卷 / 02期

关键词：

MICROWAVE-ABSORPTION; CRITICAL-FIELD; MAGNETISM; TEMPERATURE; SEARCH; ORDER; SPIN;

D O I：

10.1103/PhysRevB.97.024516

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present experimental evidence for (a) multiphase superconductivity and (b) coexistence of magnetism and superconductivity in a single structural phase of lithiated iron selenide hydroxide [(Li1-xFex) OH] FeSe. Magnetic field modulated microwave spectroscopy data confirms superconductivity with at least two distinct transition temperatures attributed to well-defined superconducting phases at T-SC1 = 40 +/- 2 K and T-SC2 = 35 +/- 2 K. Magnetometry data for the upper critical fields reveal a change in the magnetic order (T-M = 12 K) below T-SC1 and T-SC2 that is consistent with ferromagnetism. This occurs because the superconducting coherence length is much smaller than the structural coherence length, allowing for several different electronic and magnetic states on a single crystallite. The results give insight into the physics of complex multinary materials, where several phenomena governed by different characteristic length scales coexist.

引用

页数：5

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