Phase diagram of a d-wave superconductor with Anderson impurities

L. S. Borkowski

doi:10.1103/PhysRevB.78.020507

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Phase diagram of a d-wave superconductor with Anderson impurities

L. S. Borkowski

DOI 10.1103/PhysRevB.78.020507 · Physical Review B

T1

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Abstract

We present a self-consistent solution for a model of a d-wave superconductor with finite concentration of Anderson impurities at zero temperature using the slave boson method. We show how the phase diagram depends on the strength of interaction between impurity and extended states. For fixed impurity level energy E0 in the Kondo limit there is one superconducting-normal-state transition for all impurity concentrations n. When E0 is close the Fermi energy there are three such transitions for impurity concentration exceeding certain minimum value n(Γ0,E0). If hybridization Γ0 is fixed and the depth of the impurity level is varied, there are always two transitions for concentration above n(Γ0,E0).

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown