Effects of Pressure on Superconducting Properties and Vortex Pinning of CaKFe4As4 Single Crystals

被引：0

作者：

Huyan, Shuyuan ^{[1
,2
]}

Haberkorn, Nestor ^{[3
,4
,5
]}

Xu, Mingyu ^{[1
,2
,6
]}

Canfield, Paul C. ^{[1
,2
]}

Bud 'ko, Sergey L. ^{[1
,2
]}

机构：

[1] Iowa State Univ, Ames Natl Lab, Ames, IA 50011 USA

[2] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

[3] CNEA, Ctr At Bariloche, Ave E Bustillo 9500,R8402AGP, San Carlos De Bariloche, RN, Argentina

[4] CNEA, Inst Balseiro, Ave E Bustillo 9500,R8402AGP, San Carlos De Bariloche, RN, Argentina

[5] Consejo Invest Cient & Tecn, Ave E Bustillo 9500,,R8402AGP, San Carlos De Bariloche, RN, Argentina

[6] Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2025年 / 94卷 / 02期

关键词：

CRITICAL-CURRENT-DENSITY; MAGNETIZATION; DEPENDENCE; STATE;

D O I：

10.7566/JPSJ.94.024708

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Measurements of low field magnetization, trapped flux magnetization and 5 K flux creep in single crystal of CaKFe4As4 under pressure up to 7.5 GPa in a diamond pressure cell are presented. The observed evolution of the temperature dependence of the self-field critical current and slowing down of the base temperature flux creep rate are explained within the two sources of pinning hypothesis involving presence of CaFe2As2 intergrowths suggested in the literature. Above the half collapsed tetragonal structural transition under pressure, where superconductivity is non-bulk or absent, critically diminished or no diamagnetism and flux trapped magnetization were observed.

引用

页数：5

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