Superconductivity of binary hydrides
POSTER
Abstract
We have searched for and found several dynamically stable hydrides under pressure in the XH3, XH6 and XH10 structure classes. We analyze the systematic behavior of the electron-ion matrix elements, electron-phonon coupling constants and the phonon frequency moments etc. The gap functions, renormalization functions and the quasiparticle densities of states are also calculated and decomposed into contributions from the hydrogen atoms and the X atoms. We confirm and quantify that the hydrogen atoms play the dominant role in achieving high superconducting transition temperatures. Various aspects of the binary hydrides, such as anharmonic phonons, van Hove singularities near the Fermi level, and the effects of constant densities of states approximation will also be discussed.
Presenters
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Yundi Quan
Physics Department, University of Florida, Department of Physics, University of Florida, University of California, Davis
Authors
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Yundi Quan
Physics Department, University of Florida, Department of Physics, University of Florida, University of California, Davis
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Warren Pickett
Department of Physics, University of California Davis, University of California, Davis