Magnetically mediated superconductivity: Crossover from cubic to tetragonal lattice

被引:65
作者
Monthoux, P [1 ]
Lonzarich, GG [1 ]
机构
[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
来源
PHYSICAL REVIEW B | 2002年 / 66卷 / 22期
关键词
D O I
10.1103/PhysRevB.66.224504
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We compare predictions of the mean-field theory of superconductivity for nearly antiferromagnetic and nearly ferromagnetic metals for cubic and tetragonal lattices. The calculations are based on the parametrization of an effective interaction arising from the exchange of the magnetic fluctuations and assume that a single band is relevant for superconductivity. The results show that for comparable model parameters, the robustness of magnetic pairing increases gradually as one goes from a cubic structure to a more and more anisotropic tetragonal structure either on the border of antiferromagnetism or ferromagnetism.
引用
收藏
页码:1 / 8
页数:8
相关论文
共 22 条
[1]   Coherent vs. incoherent pairing in 2D systems near magnetic instability [J].
Abanov, A ;
Chubukov, AV ;
Finkel'stein, AM .
EUROPHYSICS LETTERS, 2001, 54 (04) :488-494
[2]   Coexistence of superconductivity and ferromagnetism in URhGe [J].
Aoki, D ;
Huxley, A ;
Ressouche, E ;
Braithwaite, D ;
Flouquet, J ;
Brison, JP ;
Lhotel, E ;
Paulsen, C .
NATURE, 2001, 413 (6856) :613-616
[3]   d- and p-wave superconductivity mediated by spin fluctuations in two- and three-dimensional single-band repulsive Hubbard model [J].
Arita, R ;
Kuroki, K ;
Aoki, H .
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2000, 69 (04) :1181-1191
[4]   Spin-fluctuation exchange study of superconductivity in two- and three-dimensional single-band Hubbard models [J].
Arita, R ;
Kuroki, K ;
Aoki, H .
PHYSICAL REVIEW B, 1999, 60 (21) :14585-14588
[5]   CONSERVING APPROXIMATIONS FOR STRONGLY FLUCTUATING ELECTRON-SYSTEMS .2. NUMERICAL RESULTS AND PARQUET EXTENSION [J].
BICKERS, NE ;
WHITE, SR .
PHYSICAL REVIEW B, 1991, 43 (10) :8044-8064
[6]   Vertex corrections in antiferromagnetic spin-fluctuation theories [J].
Chubukov, AV ;
Monthoux, P ;
Morr, DK .
PHYSICAL REVIEW B, 1997, 56 (13) :7789-7792
[7]  
Dobbs R., 2001, HELIUM 3
[8]   Singular structure and enhanced Friedel oscillations in the two-dimensional electron gas [J].
Khalil, IG ;
Teter, M ;
Ashcroft, NW .
PHYSICAL REVIEW B, 2002, 65 (19) :1953091-1953095
[9]   Spin-triplet superconductivity due to antiferromagnetic spin-fluctuation in Sr2RuO4 [J].
Kuwabara, T ;
Ogata, M .
PHYSICAL REVIEW LETTERS, 2000, 85 (21) :4586-4589
[10]   p-wave and d-wave superconductivity in quasi-two-dimensional metals [J].
Monthoux, P ;
Lonzarich, GG .
PHYSICAL REVIEW B, 1999, 59 (22) :14598-14605