EXCITONIC PAIRING IN HIGH-TEMPERATURE SUPERCONDUCTORS

被引：10

作者：

BALA, J

OLES, AM

机构：

[1] Institute of Physics, Jagellonian University, PL-30-059 Kraków

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.47.515

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the pairing mechanism within MO2 (M=Cu or Bi) planes of high-temperature superconductors by calculating the binding energy and the character of doped holes within perturbation theory around the atomic limit. We extend the study of Nunez Regueiro and Aligia [Phys. Rev. Lett. 61, 1889 (1988)], and show that the interoxygen Coulomb repulsion enhances the pairing in the magnetic regime and that small metal-oxygen repulsion suffices to stabilize pairing both in the bipolaronic and biexcitonic regimes.

引用

页码：515 / 518

页数：4

共 21 条

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