Interband Coulomb interaction and horizontal line nodes in triplet superconductor Sr2RuO4

被引：10

作者：

Hasegawa, Y ^{[1
]}

Yakiyama, M ^{[1
]}

机构：

[1] Himeji Inst Technol, Grad Sch Sci, Dept Mat Sci, Ako, Hyogo 6781297, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2003年 / 72卷 / 06期

关键词：

triplet superconductivity; line nodes; Hubbard model; Sr2RuO4;

D O I：

10.1143/JPSJ.72.1318

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A possible mechanism for appearance of the horizontal line nodes in triplet superconductor, Sr2RuO4, is proposed. We consider the interlayer Coulomb interaction, as well as the on-site Coulomb repulsion, between electrons in different bands. In the second order perturbation of the interband interaction, the effective interaction becomes dependent on Cos q(z)/2, resulting in horizontal line nodes.

引用

页码：1318 / 1321

页数：4

共 26 条

[1] Interlayer coupling and p-wave pairing in strontium ruthenate -: art. no. 134514 [J].

Annett, JF ;

Litak, G ;

Györffy, BL ;

Wysokinski, KI .

PHYSICAL REVIEW B, 2002, 66 (13) :1-4

[2] Polarized-neutron scattering study of the Cooper-pair moment in Sr2RuO4 [J].

Duffy, JA ;

Hayden, SM ;

Maeno, Y ;

Mao, Z ;

Kulda, J ;

McIntyre, GJ .

PHYSICAL REVIEW LETTERS, 2000, 85 (25) :5412-5415

[3] Spin-triplet superconductivity with line nodes in Sr2RuO4 [J].

Hasegawa, Y ;

Machida, K ;

Ozaki, M .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2000, 69 (02) :336-339

[4] Anisotropic superconducting gap in the spin-triplet superconductor Sr2RuO4:: Evidence from a Ru-NQR study [J].

Ishida, K ;

Mukuda, H ;

Kitaoka, Y ;

Mao, ZQ ;

Mori, Y ;

Maeno, Y .

PHYSICAL REVIEW LETTERS, 2000, 84 (23) :5387-5390

[5] Spin-triplet superconductivity in Sr2RuO4 identified by 17O Knight shift [J].

Ishida, K ;

Mukuda, H ;

Kitaoka, Y ;

Asayama, K ;

Mao, ZQ ;

Mori, Y ;

Maeno, Y .

NATURE, 1998, 396 (6712) :658-660

[6] Superconducting gap structure of spin-triplet superconductor Sr2RuO4 studied by thermal conductivity [J].

Izawa, K ;

Takahashi, H ;

Yamaguchi, H ;

Matsuda, Y ;

Suzuki, M ;

Sasaki, T ;

Fukase, T ;

Yoshida, Y ;

Settai, R ;

Onuki, Y .

PHYSICAL REVIEW LETTERS, 2001, 86 (12) :2653-2656

[7] Superconductivity of the two-dimensional Hubbard model with a small U [J].

Kondo, J .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2001, 70 (03) :808-812

[8] Magnetic penetration depth in quasi-two-dimensional superconductors with line nodes [J].

Kubo, K ;

Hirashima, DS .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2000, 69 (11) :3489-3492

[9] Effect of band structure on the symmetry of superconducting states [J].

Kuboki, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2001, 70 (09) :2698-2702

[10] Spin-triplet superconductivity due to antiferromagnetic spin-fluctuation in Sr2RuO4 [J].

Kuwabara, T ;

Ogata, M .

PHYSICAL REVIEW LETTERS, 2000, 85 (21) :4586-4589

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