Effects of nonmagnetic scatterers on the local density of states around a vortex in s-wave superconductors

P. Miranović; M. Ichioka; K. Machida

doi:10.1103/PhysRevB.70.104510

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Effects of nonmagnetic scatterers on the local density of states around a vortex in s-wave superconductors

P. Miranović, M. Ichioka, K. Machida

DOI 10.1103/PhysRevB.70.104510 · Physical Review B

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Abstract

We study the effect of nonmagnetic impurities on the local density of states (LDOS) in the mixed state of s-wave superconductors. The quasiclassical equations of superconductivity in the vortex state are solved self-consistently to show how the LDOS evolves with impurity concentration. The spatially averaged zero-energy LDOS is a linear function of magnetic induction in low fields, N(E=0)¯=α(τ)B∕Hc2, for all impurity concentrations. The coefficient α depends weakly on the electron mean-free path. We evaluate numerically the differential conductance and spatial profiles of zero-energy LDOS, which can help in extracting the mean-free path from the measured LDOS.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
NbSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Nb1-xTaxSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Nb1-xTaxSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Y(Ni1-xPtx)2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown