Lifshitz Tail in the Density of States of a Superconductor with Magnetic Impurities

Alexander V Balatsky; Stuart Alan Trugman

doi:10.1103/PhysRevLett.79.3767

Lifshitz Tail in the Density of States of a Superconductor with Magnetic Impurities

Alexander V Balatsky
, Stuart Alan Trugman

Los Alamos National Laboratory

Research output: Contribution to journal › Article › peer-review

39 Scopus citations

Abstract

We argue that any superconductor with magnetic impurities is gapless due to a Lifshitz tail in the density of states extending to zero energy. At low energy the density of states ν(E → 0) remains finite. We show that fluctuations in the impurity distribution produce regions of suppressed superconductivity, which are responsible for the low energy density of states.

Original language	English
Pages (from-to)	3767-3770
Number of pages	4
Journal	Physical Review Letters
Volume	79
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevLett.79.3767
State	Published - Nov 10 1997

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abstract = "We argue that any superconductor with magnetic impurities is gapless due to a Lifshitz tail in the density of states extending to zero energy. At low energy the density of states ν(E → 0) remains finite. We show that fluctuations in the impurity distribution produce regions of suppressed superconductivity, which are responsible for the low energy density of states.",

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AB - We argue that any superconductor with magnetic impurities is gapless due to a Lifshitz tail in the density of states extending to zero energy. At low energy the density of states ν(E → 0) remains finite. We show that fluctuations in the impurity distribution produce regions of suppressed superconductivity, which are responsible for the low energy density of states.

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JO - Physical Review Letters

JF - Physical Review Letters

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ER -

Lifshitz Tail in the Density of States of a Superconductor with Magnetic Impurities

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