Evidence of Electromagnetic Absorption by Collective Modes in the Heavy Fermion Superconductor UBe13
J. R. Feller, C.-C. Tsai, J. B. Ketterson, J. L. Smith, Bimal K. Sarma
DOI 10.1103/PhysRevLett.88.247005 · Physical Review Letters
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Abstract
We present results of a microwave surface impedance study of the heavy fermion superconductor UBe13. We clearly observe an absorption peak whose frequency and temperature dependence scales with the BCS gap function Δ(T). Resonant absorption into a collective mode, with energy approximately proportional to the superconducting gap, is proposed as a possible explanation. Fits to the data provide a simple relation between Δ(T) and the collective mode frequency.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| UBe13 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.905 | Pressure not reported | onset |
| UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| URu2Si2 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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