On the Lifshitz tail in the density of states of a superconductor with magnetic impurities

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 $\nu (E\to 0)$ 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.

4 pages, uuencoded latex file + ps figure files

Cited by in corpus (24)

• Rare region effects at classical, quantum, and non-equilibrium phase transitions
• Tail States in a Superconductor with Magnetic Impurities
• Gap Fluctuations in Inhomogeneous Superconductors
• Superconductors with Magnetic Impurities: Instantons and Sub-gap States
• Doping induced inhomogeneity in high-Tc superconductors
• Subgap states in dirty superconductors and their effect on dephasing in Josephson qubits
• Theory of Andreev Bound States in S-F-S Junctions and S-F Proximity Devices
• Surface impedance of superconductors with magnetic impurities
• Statistics of subgap states in $s_{\pm }$ superconductors
• Tail States in Disordered Superconductors with Magnetic Impurities: the Unitarity Limit
• Subgap states in disordered superconductors with strong magnetic impurities
• Interplay of Superconductivity and Spin-Dependent Disorder
• Singular Behavior of Anderson Localized Wavefunctions for a Two-Site Model
• Quantum-classical transitions in Lifshits tails with magnetic fields
• Tail states in clean superconductors with magnetic impurities
• Topological superconductivity and anti-Shiba states in disordered chains of magnetic adatoms
• Negative-U Superconductivity on the Surface of Topological Insulators
• Tail States below the Thouless Gap in SNS junctions: Classical Fluctuations
• Spectral properties of superconductors with ferromagnetically ordered magnetic impurities
• Tail states in superconductors with weak magnetic impurities
• Phase coherence phenomena in superconducting films
• Low-loss Nb on Si superconducting resonators from a dual-use spintronics deposition chamber and with acid-free post-processing
• Instanton calculation of the density of states of disordered Peierls chains
• Superconductivity and Antiferromagnetism: Hybridization Impurities in a Two-Band Spin-Gapped Electron System