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Anisotropy of the superconducting transition temperature under uniaxial pressure

Anisotropy of the superconducting transition temperature under uniaxial pressure The superconducting transition temperature T c is calculated as a function of uniaxial pressure along the a , b , c directions for optimally doped YBa 2 Cu 3 O 7 - δ on the basis of a hole dispersion of the anisotropic t - J model. There is a good qualitative agreement with experiments. We show that the uniaxial pressure effect on T c in the ab plane is due to the anisotropies of the hole dispersion and the in-plane pairing interaction, whereas the reduction of T c under uniaxial compression along the c axis mainly results from the pressure-induced increase of hole concentration of the CuO 2 plane. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Anisotropy of the superconducting transition temperature under uniaxial pressure

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Publisher
American Physical Society (APS)
Copyright
Copyright © 2001 The American Physical Society
ISSN
1095-3795
DOI
10.1103/PhysRevB.64.212501
Publisher site
See Article on Publisher Site

Abstract

The superconducting transition temperature T c is calculated as a function of uniaxial pressure along the a , b , c directions for optimally doped YBa 2 Cu 3 O 7 - δ on the basis of a hole dispersion of the anisotropic t - J model. There is a good qualitative agreement with experiments. We show that the uniaxial pressure effect on T c in the ab plane is due to the anisotropies of the hole dispersion and the in-plane pairing interaction, whereas the reduction of T c under uniaxial compression along the c axis mainly results from the pressure-induced increase of hole concentration of the CuO 2 plane.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Dec 1, 2001

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