Umklapp scattering in unconventional superconductors: Microwave conductivity shows that κ-(BEDT-TTF)2Cu[N(CN)2]Br is a dxy superconductor

被引：4

作者：

Cavanagh, D. C. ^{[1
,2
]}

Powell, B. J. ^{[1
]}

机构：

[1] Univ Queensland, Sch Math & Phys, Brisbane, Qld 4072, Australia

[2] Univ Otago, Dept Phys, Dunedin 9054, New Zealand

来源：

PHYSICAL REVIEW B | 2019年 / 100卷 / 05期

基金：

澳大利亚研究理事会;

关键词：

PENETRATION-DEPTH; ELECTRICAL-CONDUCTIVITY; INTERACTING FERMIONS; PHASE-DIAGRAM; SYMMETRY; RESISTIVITY; MODEL; STATE;

D O I：

10.1103/PhysRevB.100.054505

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Microwave conductivity experiments can directly measure the quasiparticle scattering rate in the superconducting state. We show that this, combined with knowledge of the Fermi surface geometry, can distinguish between closely related superconducting order parameters, e.g., d(x2-y2) and d(xy) superconductivity. We benchmark this method on YBa2Cu3O7-(delta) and, unsurprisingly, confirm that this is a d(x2-y2) superconductor. We then apply our method to kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br, which we discover is a d(xy), superconductor.

引用

页数：6

共 54 条

[1] SYMMETRY OF THE ORDER PARAMETER FOR HIGH-TEMPERATURE SUPERCONDUCTIVITY [J].

ANNETT, JF .

ADVANCES IN PHYSICS, 1990, 39 (02) :83-126

[2] The contribution to the electrical resistance of metals from collisions between electrons [J].

Baber, WG .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1937, 158 (A894) :0383-0396

[3] Low-temperature penetration depth of κ-(ET)2Cu[N(CN)2]Br and κ-(ET)2Cu(NCS)2 [J].

Carrington, A ;

Bonalde, IJ ;

Prozorov, R ;

Giannetta, RW ;

Kini, AM ;

Schlueter, J ;

Wang, HH ;

Geiser, U ;

Williams, JM .

PHYSICAL REVIEW LETTERS, 1999, 83 (20) :4172-4175

[4] MAGNETOTRANSPORT STUDIES OF THE ORGANIC SUPERCONDUCTOR KAPPA-(BEDT-TTF)2CU(NCS)2 UNDER PRESSURE - THE RELATIONSHIP BETWEEN CARRIER EFFECTIVE-MASS AND CRITICAL-TEMPERATURE [J].

CAULFIELD, J ;

LUBCZYNSKI, W ;

PRATT, FL ;

SINGLETON, J ;

KO, DYK ;

HAYES, W ;

KURMOO, M ;

DAY, P .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1994, 6 (15) :2911-2924

[5] Nuclear magnetic resonance in low-symmetry superconductors [J].

Cavanagh, D. C. ;

Powell, B. J. .

PHYSICAL REVIEW B, 2018, 97 (02)

[6] Mixed pairing symmetry in κ-(BEDT-TTF)2X organic superconductors from ultrasonic velocity measurements [J].

Dion, Maxime ;

Fournier, David ;

Poirier, Mario ;

Truong, Kim D. ;

Tremblay, A. -M. S. .

PHYSICAL REVIEW B, 2009, 80 (22)

[7] Quasiparticle lifetimes in a dx2-y2 superconductor -: art. no. 224522 [J].

Duffy, D ;

Hirschfeld, PJ ;

Scalapino, DJ .

PHYSICAL REVIEW B, 2001, 64 (22)

[8] κ-(BEDT-TTF)2Cu[N(CN)2]Br:: A fully gapped strong-coupling superconductor [J].

Elsinger, H ;

Wosnitza, J ;

Wanka, S ;

Hagel, J ;

Schweitzer, D ;

Strunz, W .

PHYSICAL REVIEW LETTERS, 2000, 84 (26) :6098-6101

[9] BABER SCATTERING AND RESISTIVITY OF A 2-DIMENSIONAL 2-BAND MODEL [J].

GIAMARCHI, T ;

SHASTRY, BS .

PHYSICAL REVIEW B, 1992, 46 (09) :5528-5535

[10] Near-degeneracy of extended s + dx2-y2 and dxy order parameters in quasi-two-dimensional organic superconductors [J].

Guterding, Daniel ;

Altmeyer, Michaela ;

Jeschke, Harald O. ;

Valenti, Roser .

PHYSICAL REVIEW B, 2016, 94 (02)

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