Theory for the interdependence of high-T-c superconductivity and dynamical spin fluctuations

被引：11

作者：

Grabowski, S

Schmalian, J

Langer, M

Bennemann, KH

机构：

[1] Inst. für Theoretische Physik, Freie Universität Berlin, 14195 Berlin

来源：

SOLID STATE COMMUNICATIONS | 1996年 / 98卷 / 07期

关键词：

high-T-c superconductors;

D O I：

10.1016/0038-1098(95)00842-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The doping dependence of the superconducting state for the 2D one-band Hubbard Hamiltonian is determined. EX using an Eliashberg theory within the FLEX approximation, we find that the gap function Delta(k) has a d(x2-y2) symmetry and T-c becomes maximal for 13% doping. Furthermore, we find a strong interplay between d-wave superconductivity and short range anitferromagnetic order leading to the appearance of shadow states-below T-c. Since we determine the dynamical excitations directly from real frequency axis calculations, we obtain new results for the spectral density of states that explain the anomalous behavior of photoemission and tunneling experiments.

引用

收藏

页码：611 / 615

页数：5

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