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

被引：0
作者：
V. V. Val’kov
D. M. Dzebisashvili
A. F. Barabanov
机构：
[1] Russian Academy of Sciences,Kirensky Institute of Physics, Siberian Branch
[2] Siberian Federal University,Institute for High Pressure Physics
[3] Siberian State Airspace University,undefined
[4] Russian Academy of Sciences,undefined
来源：
JETP Letters | 2010年 / 92卷
关键词：
Exchange Interaction; JETP Letter; Oxygen Hole; Fermi Excitation; Spin Polaron;
D O I：
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学科分类号：
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.
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页码：618 / 623
页数：5
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