Upper critical field in superconductors near ferromagnetic quantum critical points: UCoGe

被引：10

作者：

Tada, Yasuhiro ^{[1
]}

Kawakami, Norio ^{[1
]}

Fujimoto, Satoshi ^{[1
]}

机构：

[1] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2011年 / 80卷

关键词：

superconductivity; upper critical field; ferromagnetism; quantum criticality; non-analytic corrections;

D O I：

10.1143/JPSJS.80SA.SA006

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the strong-coupling superconductivity near ferromagnetic quantum critical points, mainly focusing on the upper critical fields H-c2. Based on our simple model calculations, we discuss experimentally observed unusual behaviors of H-c2 in a recently discovered ferromagnetic superconductor UCoGe. Especially, the large anisotropy between H-c2 parallel to a-axis and H-c2 parallel to c-axis, and the strong-coupling behaviors in H-c2(parallel to a) are investigated. We also examine effects of non-analytic corrections in the spin susceptibility on the superconductivity, which can arise from effective long range interactions due to particle-hole excitations.

引用

页数：3

共 50 条

[1] Unusual upper critical field of the ferromagnetic superconductor UCoGe
Huy, N. T.
de Nijs, D. E.
Huang, Y. K.
de Visser, A.
[J]. PHYSICAL REVIEW LETTERS, 2008, 100 (07)
[2] Enhancement of Superconductivity near the Ferromagnetic Quantum Critical Point in UCoGe
Slooten, E.
Naka, T.
Gasparini, A.
Huang, Y. K.
de Visser, A.
[J]. PHYSICAL REVIEW LETTERS, 2009, 103 (09)
[3] Extremely Large and Anisotropic Upper Critical Field and the Ferromagnetic Instability in UCoGe
Aoki, Dai
Matsuda, Tatsuma D.
Taufour, Valentin
Hassinger, Elena
Knebel, Georg
Flouquet, Jacques
[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2009, 78 (11)
[4] Pairing gaps near ferromagnetic quantum critical points
Einenkel, M.
Meier, H.
Pepin, C.
Efetov, K. B.
[J]. PHYSICAL REVIEW B, 2015, 91 (06)
[5] Resummation of fluctuations near ferromagnetic quantum critical points
Pedder, C. J.
Krueger, F.
Green, A. G.
[J]. PHYSICAL REVIEW B, 2013, 88 (16)
[6] CRITICAL FIELD IN FERROMAGNETIC SUPERCONDUCTORS
FISCHER, O
PETER, M
[J]. HELVETICA PHYSICA ACTA, 1969, 42 (7-8): : 932 - &
[7] MAGNETIZATION OF DIRTY SUPERCONDUCTORS NEAR UPPER CRITICAL FIELD
USADEL, KD
[J]. PHYSICAL REVIEW B-SOLID STATE, 1971, 4 (01): : 99 - +
[8] Upper critical field under hydrostatic pressure in UCoGe
Bastien, Gael
Knebel, Georg
Aoki, Dai
Flouquet, Jacques
[J]. INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS 2014 (SCES2014), 2015, 592
[9] A THEORY OF THE UPPER CRITICAL-FIELD IN ANTI-FERROMAGNETIC SUPERCONDUCTORS
MAHANTI, SD
SINHA, KP
ATRE, MV
[J]. JOURNAL OF LOW TEMPERATURE PHYSICS, 1981, 44 (1-2) : 1 - 10
[10] THEORY OF THE UPPER CRITICAL-FIELD IN ANTI-FERROMAGNETIC SUPERCONDUCTORS
MAHANTI, SD
SINHA, KP
ATRE, MV
[J]. BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1981, 26 (03): : 276 - 276

← 1 2 3 4 5 →