Comment on “Direct observation of the superconducting energy gap developing in the conductivity spectra of niobium”
J. Halbritter
DOI 10.1103/PhysRevB.60.12505 · Physical Review B
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Abstract
For Nb-surface impedance measurements, various deviations from BCS and Eliashberg theory have been reported. Those claimed deviations from theory are instead related to chemistry, i.e., by taking the Nb-O reaction properly into account.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9.2 | Pressure not reported | unknown |
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 8.3 | Pressure not reported | unknown |
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