Singular Current Response from Isolated Impurities in d-Wave Superconductors
Shan-Wen Tsai, P. J. Hirschfeld
DOI 10.1103/PhysRevLett.89.147004 · Physical Review Letters
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Abstract
The current response of a d-wave superconductor containing a single impurity is calculated and shown to be singular in the low-temperature limit, leading in the case of strong scattering to a 1/T term in the penetration depth λ(T) similar to that induced by Andreev surface bound states. For a small number of such impurities, we argue this low-T upturn could be observable in cuprate superconductors.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 100 | Pressure not reported | unknown |
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