Kondo-lattice screening in a d-wave superconductor
Daniel E. Sheehy, Jörg Schmalian
DOI 10.1103/PhysRevB.77.125129 · Physical Review B
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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<TKD, in contrast to the single-impurity condition Δ<TK (where TK is the Kondo temperature for Δ=0 and D is the bandwidth). Our theory explains the heavy electron behavior in the d-wave superconductor Nd2−xCexCuO4.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nd2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 20 | Pressure not reported | unknown |
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