Cooper instability of nonlocal spin polarons in the CuO2 plane of high-temperature superconductors

被引：2

作者：

Val'kov, V. V. ^{[1
,2
,3
]}

Dzebisashvili, D. M. ^{[1
,2
]}

Barabanov, A. F. ^{[4
]}

机构：

[1] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia

[2] Siberian Fed Univ, Krasnoyarsk 660041, Russia

[3] Siberian State Airspace Univ, Krasnoyarsk 660074, Russia

[4] Russian Acad Sci, Inst High Pressure Phys, Troitsk 142190, Moscow Region, Russia

来源：

JETP LETTERS | 2011年 / 92卷 / 09期

基金：

俄罗斯基础研究基金会;

关键词：

PSEUDOGAP;

D O I：

10.1134/S0021364010210101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The energy structure of nonlocal spin polarons has been obtained for the real structure of the CuO2 plane of cuprate superconductors in the ensemble of such Fermi quasiparticles. A nonlocal spin polaron is formed due to the exchange interaction of the spin of an oxygen hole with the spins of the two nearest copper ions. The scattering amplitude of nonlocal spin polarons in the cooper channel calculated using the diagrammatic technique indicates that the spin and charge degrees of freedom are strongly correlated.

引用

页码：618 / 623

页数：6

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