Anisotropy of the superconducting transition temperature under uniaxial pressure

X. J. Chen; H. Q. Lin; W. G. Yin; C. D. Gong; H.-U. Habermeier

doi:10.1103/PhysRevB.64.212501

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Anisotropy of the superconducting transition temperature under uniaxial pressure

X. J. Chen, H. Q. Lin, W. G. Yin, C. D. Gong, H.-U. Habermeier

DOI 10.1103/PhysRevB.64.212501 · Physical Review B

T1

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Abstract

The superconducting transition temperature Tc is calculated as a function of uniaxial pressure along the a, b, c directions for optimally doped YBa2Cu3O7−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 Tc in the ab plane is due to the anisotropies of the hole dispersion and the in-plane pairing interaction, whereas the reduction of Tc under uniaxial compression along the c axis mainly results from the pressure-induced increase of hole concentration of the CuO2 plane.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	91.17	Pressure not reported	unknown
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	94	Pressure not reported	unknown