Superconducting anisotropy in the electron-doped high-Tc superconductors Pr2-xCexCuO4-y

被引：7

作者：

Wu, Guoqing ^{[1
,6
]}

Greene, R. L. ^{[2
]}

Reyes, A. P. ^{[3
]}

Kuhns, P. L. ^{[3
]}

Moulton, W. G. ^{[3
]}

Wu, Bing ^{[4
]}

Wu, Feng ^{[5
]}

Clark, W. G. ^{[6
]}

机构：

[1] Yangzhou Univ, Coll Phys Sci & Technol, Yangzhou 225002, Jiangsu, Peoples R China

[2] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[3] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA

[4] Fayetteville State Univ, Dept Math & Comp Sci, Fayetteville, NC 28301 USA

[5] Hohai Univ, Sch Energy & Elect Engn, Nanjing 210098, Jiangsu, Peoples R China

[6] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2014年 / 26卷 / 40期

关键词：

upper critical field; superconductivity; anisotropy; superconductors; high-Tc; UPPER CRITICAL-FIELD; CRITICAL MAGNETIC-FIELD; SINGLE-CRYSTALS; GROWTH; SM1.85CE0.15CUO4-Y; DEPENDENCE;

D O I：

10.1088/0953-8984/26/40/405701

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report superconducting anisotropy measurements in the electron-doped high-T-c superconductors (HTSCs) Pr2-xCexCuO4-y (PCCO, x = 0.15 and 0.17) with an applied magnetic field (H-0) up to 28 T. Our results show that the upper critical field [H-c2(T)] of PCCO is highly anisotropic and as the temperature T -> 0, the value of it at H-0 vertical bar vertical bar c [H-c2,H- vertical bar vertical bar c (0)] is far less than the Pauli limit. The low temperature anisotropic character of PCCO is found to be rather similar to that of hole-doped cuprate HTSCs, but apparently larger than that of typical Fe-based superconductors. This study also proves a new sensitive probe of detecting rich properties of unconventional superconductors with the use of the resonant frequency of an NMR probe circuit.

引用

页数：7

共 50 条

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