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

[1] WEAKLY SCREENED COULOMB INTERACTION AND PROPERTIES OF HTSCS [J].

ABRIKOSOV, AA .

PHYSICA C, 1994, 222 (1-2) :191-196

[2] ON THE NATURE OF THE ORDER-PARAMETER IN HTSC AND INFLUENCE OF IMPURITIES [J].

ABRIKOSOV, AA .

PHYSICA C, 1995, 244 (3-4) :243-255

[3] PHASE-SEPARATION IN THE HUBBARD-MODEL [J].

ANDRIOTIS, AN ;

ECONOMOU, EN ;

LI, QM ;

SOUKOULIS, CM .

PHYSICAL REVIEW B, 1993, 47 (15) :9208-9214

[4]

CAPPELLUTI E, UNPUB

[5] INTERLAYER TUNNELING AND GAP ANISOTROPY IN HIGH-TEMPERATURE SUPERCONDUCTORS [J].

CHAKRAVARTY, S ;

SUDBO, A ;

ANDERSON, PW ;

STRONG, S .

SCIENCE, 1993, 261 (5119) :337-340

[6] MOMENTUM DEPENDENCE OF THE SUPERCONDUCTING GAP IN BI2SR2CACU2O8 [J].

DING, H ;

CAMPUZANO, JC ;

BELLMAN, AF ;

YOKOYA, T ;

NORMAN, MR ;

RANDERIA, M ;

TAKAHASHI, T ;

KATAYAMAYOSHIDA, H ;

MOCHIKU, T ;

KADOWAKI, K .

PHYSICAL REVIEW LETTERS, 1995, 74 (14) :2784-2787

[7] PHASE-SEPARATION IN THE T-J MODEL [J].

EMERY, VJ ;

KIVELSON, SA ;

LIN, HQ .

PHYSICAL REVIEW LETTERS, 1990, 64 (04) :475-478

[8] ELECTRON-PHONON INTERACTION IN THE PRESENCE OF STRONG CORRELATIONS [J].

GRILLI, M ;

CASTELLANI, C .

PHYSICAL REVIEW B, 1994, 50 (23) :16880-16898

[9] ELECTRONIC-SPECTRUM OF THE HIGH-TEMPERATURE SUPERCONDUCTING STATE [J].

HWU, Y ;

LOZZI, L ;

MARSI, M ;

LAROSA, S ;

WINOKUR, M ;

DAVIS, P ;

ONELLION, M ;

BERGER, H ;

GOZZO, F ;

LEVY, F ;

MARGARITONDO, G .

PHYSICAL REVIEW LETTERS, 1991, 67 (18) :2573-2576

[10] LARGE CALCULATED ELECTRON-PHONON INTERACTIONS IN LA2-XMXCUO4 [J].

KRAKAUER, H ;

PICKETT, WE ;

COHEN, RE .

PHYSICAL REVIEW B, 1993, 47 (02) :1002-1015

← 1 2 3 →