Coulomb repulsion of holes and competition between \({d_{{x^2} - {y^2}}}\) -wave and s-wave parings in cuprate superconductors


如何引用文章

全文:

开放存取 开放存取
受限制的访问 ##reader.subscriptionAccessGranted##
受限制的访问 订阅存取

详细

The effect of the Coulomb repulsion of holes on the Cooper instability in an ensemble of spin–polaron quasiparticles has been analyzed, taking into account the peculiarities of the crystallographic structure of the CuO2 plane, which are associated with the presence of two oxygen ions and one copper ion in the unit cell, as well as the strong spin–fermion coupling. The investigation of the possibility of implementation of superconducting phases with d-wave and s-wave of the order parameter symmetry has shown that in the entire doping region only the d-wave pairing satisfies the self-consistency equations, while there is no solution for the s-wave pairing. This result completely corresponds to the experimental data on cuprate HTSC. It has been demonstrated analytically that the intersite Coulomb interaction does not affect the superconducting d-wave pairing, because its Fourier transform Vq does not appear in the kernel of the corresponding integral equation.

作者简介

V. Val’kov

Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Scientific Center,”

编辑信件的主要联系方式.
Email: vvv@iph.krasn.ru
俄罗斯联邦, Krasnoyarsk, 660036

D. Dzebisashvili

Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Scientific Center,”; Reshetnev Siberian State University of Science and Technologies

Email: vvv@iph.krasn.ru
俄罗斯联邦, Krasnoyarsk, 660036; Krasnoyarsk, 660037

M. Korovushkin

Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Scientific Center,”

Email: vvv@iph.krasn.ru
俄罗斯联邦, Krasnoyarsk, 660036

A. Barabanov

Vereshchagin Institute of High Pressure Physics

Email: vvv@iph.krasn.ru
俄罗斯联邦, Troitsk, Moscow, 108840

补充文件

附件文件
动作
1. JATS XML

版权所有 © Pleiades Publishing, Inc., 2017