Effects of van Hove singularities on magnetism and superconductivity in the t-t′ Hubbard model:: A parquet approach -: art. no. 165107

被引：64

作者：

Irkhin, VY ^{[1
]}

Katanin, AA ^{[1
]}

Katsnelson, MI ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Met Phys, Ekaterinburg 620219, Russia

来源：

PHYSICAL REVIEW B | 2001年 / 64卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.64.165107

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The t-t' Hubbard model for the Fermi level near the van Hove singularity is considered within the renormalization group and parquet approaches. Interplay of ferromagnetic, antiferromagnetic, and superconducting channels is investigated, and the phase diagram of the model is constructed. In comparison with previous approaches, the account of ferromagnetic fluctuations suppresses superconducting pairing and, vice versa, the influence of the Cooper channel decreases the Curie temperature, so that the Stoner criterion is inapplicable even qualitatively.

引用

页数：11

共 50 条

[1] Pomeranchuk and other instabilities in the t-t′ Hubbard model at the Van Hove filling -: art. no. 094516
Hankevych, V
Grote, I
Wegner, F
PHYSICAL REVIEW B, 2002, 66 (09): : 1 - 4
[2] Superconductivity within the t-t′ Hubbard model of a bilayer -: art. no. 144529
Mráz, J
Hlubina, R
PHYSICAL REVIEW B, 2004, 70 (14) : 144529 - 1
[3] Weak ferromagnetism and other instabilities of the two-dimensional t-t′ Hubbard model at van Hove fillings -: art. no. 214405
Hankevych, V
Kyung, B
Tremblay, AMS
PHYSICAL REVIEW B, 2003, 68 (21):
[4] Stability of the doped antiferromagnetic state of the t-t′ Hubbard model -: art. no. 134414
Singh, A
Ghosh, H
PHYSICAL REVIEW B, 2002, 65 (13): : 1 - 10
[5] Superconductivity and instabilities in the t-t′ Hubbard model
Wegner, F
Hankevych, V
ACTA PHYSICA POLONICA B, 2003, 34 (02): : 497 - 501
[6] Magnetism and superconductivity in the t-t′-J model
Spanu, Leonardo
Lugas, Massimo
Becca, Federico
Sorella, Sandro
PHYSICAL REVIEW B, 2008, 77 (02)
[7] Weak-coupling phases of the attractive t-t′ Hubbard model at the Van Hove filling
Alvarez, JV
González, J
EUROPHYSICS LETTERS, 1998, 44 (05): : 641 - 647
[8] Microscopic description of d-wave superconductivity by Van Hove nesting in the Hubbard model -: art. no. 024502
González, J
PHYSICAL REVIEW B, 2001, 63 (02)
[9] Magnetism in the two-dimensional t-t′ Hubbard model:: From low- to over-doping -: art. no. 134417
Taniguchi, H
Morita, Y
Hatsugai, Y
PHYSICAL REVIEW B, 2005, 71 (13):
[10] Kohn-Luttinger instability of the t-t′ Hubbard model in two dimensions:: Variational approach -: art. no. 174518
Mráz, J
Hlubina, R
PHYSICAL REVIEW B, 2003, 67 (17):

← 1 2 3 4 5 →