Enhancement of pairing correlation by t′ in the two-dimensional extended t-J model -: art. no. 227002

被引：94

作者：

Shih, CT ^{[1
]}

Lee, TK

Eder, R

Mou, CY

Chen, YC

机构：

[1] Tunghai Univ, Dept Phys, Taichung 40704, Taiwan

[2] Acad Sinica, Inst Phys, Nankang, Taiwan

[3] Forschungszentrum Karlsruhe, Inst Festkorperphys, Karlsruhe, Germany

[4] Natl Tsing Hua Univ, Dept Phys, Hsinchu, Taiwan

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.92.227002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the effects of the next-nearest-neighbor (t') and the third-nearest-neighbor (t") hopping terms on superconductivity correlation in the 2D hole-doped extended t-J model based on the variational Monte Carlo, mean-field calculation and exact diagonalization method. Despite the diversity of the methods employed, the results all point to a consistent conclusion: While the d-wave superconductivity correlation is slightly suppressed by t' and t"(') in underdoped regions, it is greatly enhanced in the optimal and overdoped regions. The optimal T-c is a result of the balance of these two opposite trends.

引用

页码：227002 / 1

页数：4

共 50 条

[21] Density matrix renormalization group analysis of the Nagaoka polaron in the two-dimensional t-J model -: art. no. 024411
White, SR
Affleck, I
PHYSICAL REVIEW B, 2001, 64 (02):
[22] Charge and spin ordering and charge transport properties in a two-dimensional inhomogeneous t-J model -: art. no. 064524
Riera, JA
PHYSICAL REVIEW B, 2002, 65 (06) : 1 - 9
[23] Checkerboard patterns in the t-J model -: art. no. 220506
White, SR
Scalapino, DJ
PHYSICAL REVIEW B, 2004, 70 (22): : 220506 - 1
[24] Comment on "Superconductivity in the two-dimensional t- j model" -: art. no. 279702
Lee, TK
Shih, CT
Chen, YC
Lin, HQ
PHYSICAL REVIEW LETTERS, 2002, 89 (27) : 1 - 279703
[25] Thermodynamics and crossover phenomena in the correlation lengths of the one-dimensional t-J model -: art. no. 245102
Sirker, J
Klümper, A
PHYSICAL REVIEW B, 2002, 66 (24): : 1 - 14
[26] Effects of domain walls on hole motion in the two-dimensional anisotropic t-J model at finite temperature -: art. no. 054530
Riera, JA
PHYSICAL REVIEW B, 2003, 68 (05):
[27] Spin exchange and superconductivity in a t-J′-V model for two-dimensional quarter-filled systems -: art. no. 144502
Greco, A
Merino, J
Foussats, A
McKenzie, RH
PHYSICAL REVIEW B, 2005, 71 (14):
[28] Spin excitations and momentum distribution in the two-dimensional extended t-J model
Miyanaga, A
Hasegawa, Y
Fukuyama, H
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1999, 68 (01) : 204 - 211
[29] Phase diagram and pairing symmetry of the two-dimensional t-J model by a variation theory
Yokoyama, H
Ogata, M
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1996, 65 (11) : 3615 - 3629
[30] Possible pairing symmetry in the two-dimensional t-J model on square and triangular lattices
Koretsune, T
Ogata, M
PHYSICA B-CONDENSED MATTER, 2005, 359 : 545 - 547

← 1 2 3 4 5 →