Comparison of the normal- and superconducting-state electromagnetic absorption in Sr2RuO4
G. V. Sudhakar Rao, M. Reedyk, N. Kikugawa, Y. Maeno
DOI 10.1103/PhysRevB.73.052507 · Physical Review B
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Abstract
The ratio of the far-infrared reflectance of Sr2RuO4 in the superconducting state RS to that in the normal state RN has been measured. For light polarized within the ab plane, the superconducting state reflectance is enhanced over that of the normal state below ≈20cm−1, with the thermal reflectance ratio RS∕RN peaking near 9cm−1. The energy at which the thermal reflectance peaks, and the magnitude of its enhancement are significantly larger than expected due to the formation of a BCS energy gap. The energy scale coincides with the superconducting energy gap of Sr2RuO4 determined via tunneling measurements.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.42 | Pressure not reported | onset |
| Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.02 | Pressure not reported | unknown |
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