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

被引：8

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 59 条

[1] Resistive upper critical fields and irreversibility lines of optimally doped high-Tc cuprates [J].

Ando, Y ;

Boebinger, GS ;

Passner, A ;

Schneemeyer, LF ;

Kimura, T ;

Okuya, M ;

Watauchi, S ;

Shimoyama, J ;

Kishio, K ;

Tamasaku, K ;

Ichikawa, N ;

Uchida, S .

PHYSICAL REVIEW B, 1999, 60 (17) :12475-12479

[2] Anomalous change in the field dependence of the electronic specific heat of an electron-doped cuprate superconductor [J].

Balci, H ;

Greene, RL .

PHYSICAL REVIEW LETTERS, 2004, 93 (06) :067001-1

[3] Nernst effect in electron-doped Pr2-xCexCuO4 -: art. no. 054520 [J].

Balci, H ;

Hill, CP ;

Qazilbash, MM ;

Greene, RL .

PHYSICAL REVIEW B, 2003, 68 (05)

[4] THEORY OF SUPERCONDUCTIVITY [J].

BARDEEN, J ;

COOPER, LN ;

SCHRIEFFER, JR .

PHYSICAL REVIEW, 1957, 108 (05) :1175-1204

[5] Evidence of a d - to s-wave pairing symmetry transition in the electron-doped cuprate superconductor Pr2-xCexCuO4 -: art. no. 207004 [J].

Biswas, A ;

Fournier, P ;

Qazilbash, MM ;

Smolyaninova, VN ;

Balci, H ;

Greene, RL .

PHYSICAL REVIEW LETTERS, 2002, 88 (20) :4

[6] VORTICES IN HIGH-TEMPERATURE SUPERCONDUCTORS [J].

BLATTER, G ;

FEIGELMAN, MV ;

GESHKENBEIN, VB ;

LARKIN, AI ;

VINOKUR, VM .

REVIEWS OF MODERN PHYSICS, 1994, 66 (04) :1125-1388

[7] Crystal growth of high-T-c superconductors Pr2-xCexCuO4+delta with substitutions of Ni and Co for Cu [J].

Brinkmann, M ;

Rex, T ;

Bach, H ;

Westerholt, K .

JOURNAL OF CRYSTAL GROWTH, 1996, 163 (04) :369-376

[8] Upper critical field Hc2 calculations for the high critical temperature superconductors considering inhomogeneities [J].

Caixeiro, ES ;

Gonz lez, JL ;

de Mello, EVL .

PHYSICAL REVIEW B, 2004, 69 (02)

[9]

Chang J, 2012, NAT PHYS, V8, P751, DOI [10.1038/NPHYS2380, 10.1038/nphys2380]

[10] Anisotropic upper critical field and possible Fulde-Ferrel-Larkin-Ovchinnikov state in the stoichiometric pnictide superconductor LiFeAs [J].

Cho, K. ;

Kim, H. ;

Tanatar, M. A. ;

Song, Y. J. ;

Kwon, Y. S. ;

Coniglio, W. A. ;

Agosta, C. C. ;

Gurevich, A. ;

Prozorov, R. .

PHYSICAL REVIEW B, 2011, 83 (06)

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