Effect of strong scattering on the low-temperature penetration depth of a d-wave superconductor
Peter J. Hirschfeld, Nigel Goldenfeld
DOI 10.1103/PhysRevB.48.4219 · Physical Review B
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Abstract
For a pure superconductor in a d-wave-like state at temperatures T well below the critical temperature Tc, the deviation Δλ of the penetration depth from its zero-temperature value λ(0) is proportional to T. When the concentration ni of strongly scattering impurities is nonzero, Δλ∝Tn, where n=2 for T<T*≪Tc and n=1 for T*<T≪Tc. The crossover temperature T* and the increase in λ(0) scale as √ni up to logarithmic corrections when resonant scattering is dominant. We argue that this case is relevant to recent measurements on YBa2Cu3O7−δ and present specific results for a model pairing state with dx2-y2 symmetry.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Tl2CaBa2Cu2O8-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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