Density of states of a type-II superconductor in a high magnetic field: Impurity effects

Saša Dukan; Zlatko Tešanović

doi:10.1103/PhysRevB.56.838

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Density of states of a type-II superconductor in a high magnetic field: Impurity effects

Saša Dukan, Zlatko Tešanović

DOI 10.1103/PhysRevB.56.838 · Physical Review B

T1

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Abstract

We have calculated the density of states N(ω) of a dirty but homogeneous superconductor in a high magnetic field. We assume a dilute concentration of scalar impurities and find how N(ω) behaves as one crosses from the weak scattering to the strong scattering limit. At low energies, N(ω)∼ω2 for small values of the impurity concentration and scattering strength. When the disorder becomes stronger than some critical value, a finite density of states is created at the Fermi surface. These results are a consequence of the gapless nature of the quasiparticle excitation spectrum in a high magnetic field.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown