Effect of magnetic and nonmagnetic impurities on highly anisotropic superconductivity

Journal Article · Sun Jun 01 00:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.55.15146· OSTI ID:530168

Golubov, A A ^[1]; Mazin, I I ^[2]

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1. Department of Applied Physics, University of Twente, Enschede (The Netherlands)
2. George Mason University and Complex Systems Theory Branch, Naval Research Laboratory, Washington, D.C. 20375-5320 (United States)

We generalize Abrikosov-Gor{close_quote}kov solution of the problem of weakly coupled superconductors with impurities to the case of a multiband superconductor with arbitrary interband order parameter anisotropy, including interband sign reversal of the order parameter. The solution is given in terms of the effective (renormalized) coupling matrix and describes not only T{sub c} suppression but also renormalization of the superconducting gap basically at all temperatures. In many limiting cases we find analytical solutions for the critical temperature suppression. We illustrate our results by numerical calculations for two-band model systems. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 530168
• Journal Information: Physical Review, B: Condensed Matter, Vol. 55, Issue 22; Other Information: PBD: Jun 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
HIGH-TC SUPERCONDUCTORS
IMPURITIES
TRANSITION TEMPERATURE
SUPERCONDUCTIVITY
ANALYTICAL SOLUTION
ANISOTROPY
ENERGY GAP