Superconducting properties of La2(Cu1-xNix)5As3O2: A μSR study

被引：1

作者：

Wu, Qiong ^{[1
]}

Chen, Kaiwen ^{[1
]}

Zhu, Zihao ^{[1
]}

Tan, Cheng ^{[1
]}

Yang, Yanxing ^{[1
]}

Li, Xin ^{[1
]}

Shiroka, Toni ^{[2
,3
]}

Chen, Xu ^{[4
]}

Guo, Jiangang ^{[4
]}

Chen, Xiaolong ^{[4
]}

Shu, Lei ^{[1
,5
,6
]}

机构：

[1] Fudan Univ, Dept Phys, State Key Lab Surface Phys, Shanghai 200438, Peoples R China

[2] Paul Scherrer Inst, Lab Muon Spin Spect, CH-5232 Villigen, Switzerland

[3] Swiss Fed Inst Technol, Lab Festkorperphys, CH-8093 Zurich, Switzerland

[4] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100190, Peoples R China

[5] Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China

[6] Shanghai Res Ctr Quantum Sci, Shanghai 201315, Peoples R China

来源：

PHYSICAL REVIEW B | 2023年 / 107卷 / 21期

关键词：

MAGNETIC PENETRATION DEPTH; SPIN RELAXATION; II SUPERCONDUCTORS; FLUX DISTRIBUTION; CUPRATE; ORDER; DYNAMICS; DENSITY; FIELD; TC;

D O I：

10.1103/PhysRevB.107.214502

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the results of muon spin rotation and relaxation (mu SR) measurements on the recently discovered layered Cu-based superconducting material La2(Cu1-xNix)5As3O2 (x = 0.40 and 0.45). Transverse-field mu SR experiments on both samples show that the temperature dependence of superfluid density is best described by a two-band model. The absolute values of zero-temperature magnetic penetration depth lambda ab(0) were found to be 427(1.7) and 422(1.5) nm for x = 0.40 and 0.45, respectively. Both compounds are located between the unconventional and the standard BCS superconductors in the Uemura plot. No evidence of time-reversal symmetry breaking in the superconducting state is suggested by zero-field mu SR measurements.

引用

页数：9

共 71 条

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