Combined effect of nonmagnetic and magnetic scatterers on critical temperatures of superconductors with different gap anisotropy

Details Combined effect of nonmagnetic and magnetic scatterers on critical temperatures of superconductors with different gap anisotropy Combined effect of nonmagnetic and magnetic scatterers on critical temperatures of superconductors with different gap anisotropy

1997-11-18

arxiv.org/abs/cond-mat/9711175v1

Pis'ma v ZhETF 66 (1997) 627-632 [JETP Lett. 66 (1997) 661-667]

Physics

Condensed Matter

Superconductivity

5 pages, TeX

Scientific paper

10.1134/1.567576

The combined effect of nonmagnetic and magnetic defects and impurities on critical temperatures of superconductors with different gap anisotropy is studied theoretically within the weak coupling limit of the BCS model. An expression is derived which relates the critical temperature to relaxation rates of charge carriers by nonmagnetic and magnetic scatterers, as well as to the coefficient of anisotropy of the superconducting order parameter on the Fermi surface. Particular cases of d-wave, (s+d)-wave, and anisotropic s-wave superconductors are briefly discussed.

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