Enhanced Superconductivity by Electron Renormalization of a Directly Observed Brout-Visscher Local Phonon: Re in
- 8 December 1986
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 57 (23) , 2987-2990
- https://doi.org/10.1103/physrevlett.57.2987
Abstract
Tunneling reveals a ∼14-meV resonance mode of Re in , , which contributes strongly to and to strong coupling, . The anomalous softening and width of the resonance mode are consistent with the standard theory of phonon renormalization by the electron gas. These unexpected results explain the low-, high- behavior of and possible Ge.
Keywords
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