Nearly Free Electrons in the Layered Oxide Superconductor Ag5Pb2O6
Mike Sutherland, Peter D. A. Mann, Christoph Bergemann, Shingo Yonezawa, Yoshiteru Maeno
DOI 10.1103/PhysRevLett.96.097008 · Physical Review Letters
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Abstract
We present first measurements of quantum oscillations in the layered oxide superconductor Ag5Pb2O6. From a detailed angular and temperature dependent study of the de Haas–van Alphen effect we determine the electronic structure and demonstrate that the electron masses are very light, m*∼1.2me. The Fermi surface we observe is essentially that expected of nearly free electrons—establishing Ag5Pb2O6 as the first known example of a monovalent, nearly free electron superconductor at ambient pressure.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ag5Pb2O6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.052 | Pressure not reported | unknown |
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