Kondo-lattice screening in a d-wave superconductor
arXiv:0704.1815 · doi:10.1103/PhysRevB.77.125129
Abstract
We show that local moment screening in a Kondo lattice with d-wave superconducting conduction electrons is qualitatively different from the corresponding single Kondo impurity case. Despite the conduction-electron pseudogap, Kondo-lattice screening is stable if the gap amplitude obeys $Δ<\sqrt{\tk D}$, in contrast to the single impurity condition $Δ<\tk$ (where $\tk$ is the Kondo temperature for and D is the bandwidth). Our theory explains the heavy electron behavior in the d-wave superconductor Nd_{2-x}Ce_{x}CuO_{4}.
11 pages, 6 figures, revised version to appear in Physical Review B
References in corpus (11)
- Heavy-fermion superconductivity in CeCoIn5 at 2.3K
- How do Fermi liquids get heavy and die?
- Phase-sensitive Evidence for d-wave Pairing Symmetry in Electron-doped Cuprate Superconductors
- Renormalization-group study of Anderson and Kondo impurities in gapless Fermi systems
- Impurity Quantum Phase Transitions
- Evidence for nodal quasiparticles in electron-doped cuprates from penetration depth measurements
- Phase transitions in the pseudogap Anderson and Kondo models: Critical dimensions, renormalization group, and local-moment criticality
- Behavior of magnetic impurities in gapless Fermi systems
- Upper-critical dimension in a quantum impurity model: Critical theory of the asymmetric pseudogap Kondo problem
- Kondo Scaling in the Optical Response of YbIn_(1-x)Ag_xCu_4
- Anderson impurity in a correlated conduction band