Superconductivity in charge Kondo systems

Abstract

We present a theory of superconductivity in charge Kondo systems, materials with resonant quantum valence fluctuations, in the regime where the transition temperature is comparable to the charge Kondo resonance. We find superconductivity induced by charge Kondo impurities, study how pairing of a superconducting host is enhanced due to charge Kondo centers and investigate the interplay between Kondo-scattering and inter-impurity Josephson coupling. We discuss the implications of our theory for Tl-doped PbTe, which has recently been identified as a candidate charge Kondo system.

4 pages, 4 figures; revised version; detailed discussion on the physics of Tl-doped PbTe added

References in corpus (2)

• Evidence for charge Kondo effect in superconducting Tl-doped PbTe
• Josephson tunnelling spectroscopy of negative U centers

Cited by in corpus (43)

• Evidence for charge Kondo effect in superconducting Tl-doped PbTe
• Enhanced superconducting pairing interaction in indium-doped tin telluride
• Enhancing Superconductivity by Disorder
• Mechanism for large thermoelectric power in negative-U molecular quantum dots
• Madelung Energy of the Valence Skipping Compound BaBiO${}_3$
• Eliashberg equations for an electron-phonon version of the Sachdev-Ye-Kitaev model: Pair Breaking in non-Fermi liquid superconductors
• Fermi surface and electron dispersions of PbTe doped with resonant Tl impurity from KKR-CPA calculations
• Charge Kondo anomalies in PbTe doped with Tl impurities
• Single crystal growth by self-flux method of the mixed valence gold halides Cs${}_2$[Au${}^I$X${}_2$][Au${}^{III}$X${}_4$] (X=Br,I)
• What Tc Tells
• Evidence for a charge Kondo effect in Pb(1-x)Tl(x)Te from measurements of thermoelectric power
• s-wave Superconductivity Phase Diagram in the Inhomogeneous Two-Dimensional Attractive Hubbard Model
• Evolution of electronic states and emergence of superconductivity in the polar semiconductor GeTe by doping valence-skipping In
• Theory of Charge Kondo Effect on Pair Hopping Mechanism
• Tailoring band-structure and band-filling in a simple cubic (IV, III) - VI superconductor
• Evidence of incoherent carriers associated with resonant impurity levels and their influence on superconductivity in the anomalous superconductor Pb${}_{1-x}$Tl${}_x$Te
• Spin-orbit coupling controlling the superconducting dome of artificial superlattices of quantum wells
• Fermi surface evolution of Na-doped PbTe studied through density functional theory calculations and Shubnikov-de Haas measurements
• Tunable spin/charge Kondo effect at a double superconducting island connected to two spinless quantum wires
• Direct spectroscopic evidence for mixed-valence Tl in the low carrier-density superconductor Pb${}_{1-x}$Tl${}_x$Te
• Theory Perspective: SCES '05 Vienna
• Interplay of the Kondo effect with the induced pairing in electronic and caloric properties of T-shaped double quantum dots
• Correlation of anomalous scattering and superconductivity in Pb${}_{.99}$Tl${}_{.01}$Te doped with additional indium donors
• Charge-Kondo Effect in Mesoscopic Superconductors Coupled to Normal Metals
• Nonequilibrium Kondo effect by equilibrium numerical renormalization group method: The hybrid Anderson model subject to a finite spin bias
• Two-component Coulomb Glass in Disordered Superconducting Films
• Driving Topological Phases by Spatially Inhomogeneous Pairing Centers
• Anomalous ^{125}Te Nuclear Spin Relaxation Coincident with Charge Kondo Behavior in Superconducting Pb_{1-x}Tl_{x}Te
• Charge-Kondo effect mediated by repulsive interactions
• Extended strange metal regime from superconducting puddles
• Phase Diagram of the Attractive Hubbard Model with Inhomogeneous Interactions
• Superconducting ground state study of valence skip compound AgSnSe${}_2$
• Superconductor-insulator transition in Coulomb disorder
• Towards A Possible Charge-Kondo effect in Optical Lattices
• Negative-U Superconductivity on the Surface of Topological Insulators
• Pair correlations and the survival of superconductivity in and around a super-conducting impurity
• Quantum criticality and formation of a singular Fermi liquid in the attractive SU(N > 2) Anderson model
• Oscillate and Renormalize: Fast Phonons Reshape the Kondo Effect in Flat Band Systems
• Superconductivity, valence-skipping and topological crystalline metal in AgSnSe${}_2$
• Three-electron bunches in occupation of a 5-site Coulomb cluster
• Quantum phase transitions in superconductor--quantum-dot--superconductor Josephson structures with attractive intradot interaction
• Probing Mixed Valence States by Nuclear Spin-Spin Relaxation Time Measurements
• Charge Kondo Effect in Thermoelectric Properties of Lead Telluride doped with Thallium Impurities