Fulde-Ferrell-Larkin-Ovchinnikov state due to antisymmetric spin-orbit coupling in the noncentrosymmetric superconductor CePt3Si

被引：3

作者：

Tanaka, Hiroko ^{[1
]}

Kaneyasu, Hirono ^{[1
]}

Hasegawa, Yasumasa ^{[1
]}

机构：

[1] Univ Hyogo, Dept Mat Sci, Akou Gun, Hyogo 6781297, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2007年 / 460卷 / SPEC. ISS.期

关键词：

CePt3Si; heavy fermion superconductivity; spin-orbit coupling; FFLO; spin triplet superconductivity; noncentrosymmetric;

D O I：

10.1016/j.physc.2007.03.034

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

When the inversion symmetry is broken, the spin-orbit coupling reduces the superconducting transition temperature of some types of spin triplet superconductivity, which is similar to the case that magnetic field weakens the spin singlet superconductivity due to Zeeman splitting. It is well known that Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state of spin singlet superconductivity is realized near the Pauli limit (or Chandrasekhar-Clogston limit). In the FFLO state the amplitude of the order parameter is not uniform in space. In this paper, we study the FFLO state of the spin triplet superconductivity due to the spin-orbit coupling with no external magnetic field. Although the FFLO state is not realized in the simple model with spherical Fermi surface, it will be stabilized if the nesting condition of the Fermi surface is favorable for the FFLO state. We discuss the possibility of FFLO state in CePt3Si in the absence of external magnetic field. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：668 / 669

页数：2

共 11 条

[1]

ANDERSON PW, 1984, PHYS REV B, V30, P4000, DOI 10.1103/PhysRevB.30.4000

[2] Heavy fermion superconductivity and magnetic order in noncentrosymmetric CePt3Si -: art. no. 027003 [J].

Bauer, E ;

Hilscher, G ;

Michor, H ;

Paul, C ;

Scheidt, EW ;

Gribanov, A ;

Seropegin, Y ;

Noël, H ;

Sigrist, M ;

Rogl, P .

PHYSICAL REVIEW LETTERS, 2004, 92 (02) :4

[3] Evidence for line nodes in the superconducting energy gap of noncentrosymmetric CePt3Si from magnetic penetration depth measurements -: art. no. 207002 [J].

Bonalde, I ;

Brämer-Escamilla, W ;

Bauer, E .

PHYSICAL REVIEW LETTERS, 2005, 94 (20)

[4] Superconductivity without inversion symmetry:: MnSi versus CePt3Si -: art. no. 097001 [J].

Frigeri, PA ;

Agterberg, DF ;

Koga, A ;

Sigrist, M .

PHYSICAL REVIEW LETTERS, 2004, 92 (09) :097001-1

[5] Nuclear magnetic relaxation rate in a noncentrosymmetric superconductor [J].

Hayashi, N ;

Wakabayashi, K ;

Frigeri, PA ;

Sigrist, M .

PHYSICAL REVIEW B, 2006, 73 (09)

[6] Temperature dependence of the superfluid density in a noncentrosymmetric superconductor [J].

Hayashi, N ;

Wakabayashi, K ;

Frigeri, PA ;

Sigrist, M .

PHYSICAL REVIEW B, 2006, 73 (02)

[7] Line nodes in the superconducting gap function of noncentrosymmetric CePt3Si -: art. no. 197002 [J].

Izawa, K ;

Kasahara, Y ;

Matsuda, Y ;

Behnia, K ;

Yasuda, T ;

Settai, R ;

Onuki, Y .

PHYSICAL REVIEW LETTERS, 2005, 94 (19)

[8] FULDE-FERRELL STATE IN QUASI-2-DIMENSIONAL SUPERCONDUCTORS [J].

SHIMAHARA, H .

PHYSICAL REVIEW B, 1994, 50 (17) :12760-12765

[9] NMR study of heavy fermion superconductor with no inversion symmetry CePt3Si [J].

Ueda, K. ;

Koyama, T. ;

Hamamoto, K. ;

Kohara, T. ;

Motoyama, G. ;

Oda, Y. .

JOURNAL OF APPLIED PHYSICS, 2006, 99 (08)

[10]

UEDA K, 2005, PHYSICA B, V374, P359

← 1 2 →