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Nearly free electrons in the layered oxide superconductor Ag5Pb2O6

Mike Sutherland·P. D. A. Mann·Christoph Bergemann·Shingo Yonezawa·Yoshiteru Maeno
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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 dHvA effect we determine the electronic structure and demonstrate that the electron masses are very light, m^* is approximately equalt to 1.2 m_e. 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.

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Mike Sutherland, P. D. A. Mann, Christoph Bergemann, Shingo Yonezawa, Yoshiteru Maeno. 2005-09-21. Nearly free electrons in the layered oxide superconductor Ag5Pb2O6. https://doi.org/10.1103/physrevlett.96.097008

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