Nearly free electrons in the layered oxide superconductor Ag5Pb2O6

Details Nearly free electrons in the layered oxide superconductor Ag5Pb2O6 Nearly free electrons in the layered oxide superconductor Ag5Pb2O6

2005-09-21

arxiv.org/abs/cond-mat/0509547v1

Physics

Condensed Matter

Superconductivity

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.96.097008

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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