Density-of-states-driven anisotropies induced by momentum decoupling in Bi2Sr2CaCu2O8

被引：36

作者：

Varelogiannis, G ^{[1
]}

Perali, A ^{[1
]}

Cappelluti, E ^{[1
]}

Pietronero, L ^{[1
]}

机构：

[1] UNIV ROMA LA SAPIENZA, DIPARTIMENTO FIS, I-00185 ROME, ITALY

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.54.R6877

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Momentum decoupling arises when small-q scattering dominates the pairing interaction and implies density-of-states-driven anisotropies in superconductivity. In this scheme we explain puzzling aspects of the anisotropy in Bi2Sr2CaCu2O8, such as the correlation of gap magnitude and visibility of the dip above the gap, the enhancement of anisotropy with temperature, the presence of gap minima away from the Gamma-X direction and a gap maximum in the Gamma-X direction, the similarity of tunnel and angle-resolved photoemission spectra in the Gamma-(M) over bar direction, and the asymmetry in vacuum tunnel spectra where the dip structure is present only at negative sample bias.

引用

页码：R6877 / R6880

页数：4

共 26 条

[21] MAXIMUM INFORMATION FROM THE SUPERCONDUCTING GAP MEASUREMENTS ON HIGH-T-C MATERIALS [J].

VARELOGIANNIS, G .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1995, 249 (1-2) :87-110

[22] Quasiparticle decay effects in the superconducting density of states: Evidence for d-wave pairing in the cuprates - Comment [J].

Varelogiannis, G .

PHYSICAL REVIEW LETTERS, 1996, 76 (17) :3236-3236

[23] ELIASHBERG FUNCTION OF CUPRATES AND FULLERIDES FROM GAP MEASUREMENTS [J].

VARELOGIANNIS, G .

PHYSICAL REVIEW B, 1994, 50 (21) :15974-15977

[24] CRITICAL REGIME OF CONVENTIONAL THEORY AND HIGH-TEMPERATURE SUPERCONDUCTORS [J].

VARELOGIANNIS, G .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1994, 232 (1-2) :49-62

[25] QUASI-PARTICLE SPECTRUM IN THE HIGH-T-C SUPERCONDUCTING STATE [J].

VARELOGIANNIS, G .

PHYSICAL REVIEW B, 1995, 51 (02) :1381-1384

[26] SITE-SELECTIVE OXYGEN-ISOTOPE EFFECT, IN OPTIMALLY DOPED YBA2CU3O6+X [J].

ZECH, D ;

KELLER, H ;

CONDER, K ;

KALDIS, E ;

LIAROKAPIS, E ;

POULAKIS, N ;

MULLER, KA .

NATURE, 1994, 371 (6499) :681-683

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