Coexistence of magnetism and superconductivity in separate layers of the iron-based superconductor Li1-xFex(OH)Fe1-ySe

被引：10

作者：

Topping, C. V. ^{[1
]}

Kirschner, F. K. K. ^{[1
]}

Blundell, S. J. ^{[1
]}

Baker, P. J. ^{[2
]}

Woodruff, D. N. ^{[3
]}

Schild, F. ^{[3
]}

Sun, H. ^{[3
]}

Clarke, S. J. ^{[3
]}

机构：

[1] Univ Oxford, Dept Phys, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England

[2] STFC Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

[3] Univ Oxford, Dept Chem, Inorgan Chem Lab, S Parks Rd, Oxford OX1 3PU, England

来源：

PHYSICAL REVIEW B | 2017年 / 95卷 / 13期

基金：

英国工程与自然科学研究理事会;

关键词：

HIGH-TEMPERATURE SUPERCONDUCTIVITY; TRANSITION-TEMPERATURE; PHASE-DIAGRAM; FESE; SUSCEPTIBILITY; BA;

D O I：

10.1103/PhysRevB.95.134419

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Themagnetic properties attributed to the hydroxide layer of Li1-xFex(OH)Fe1-y Se have been elucidated by the study of superconducting and nonsuperconducting members of this family of compounds. Both ac magnetometry and muon spin relaxation measurements of nonsuperconductors find a magnetic state existing below approximate to 10 K which exhibits slow relaxation of magnetization. This magnetic state is accompanied by a low-temperature heat capacity anomaly present in both superconducting and nonsuperconducting variants suggesting that the magnetism persists into the superconducting state. The estimated value of magnetic moment present within the hydroxide layer supports a picture of a glassy magnetic state, probably comprising clusters of iron ions of varying cluster sizes distributed within the lithium hydroxide layer.

引用

页数：9

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