Enhanced superconductivity by electron renormalization of a directly observed brout-visscher local phonon: Re in Mo1-xRex

Danny P. Shum, A. Bevolo, J. L. Staudenmann, E. L. Wolf

Research output: Contribution to journalArticlepeer-review

Abstract

Tunneling reveals a 14-meV resonance mode of Re in Mo1-xRex, 0.2<x<0.4, which contributes strongly to 2F() and to strong coupling, 2kTc-3.53=0. 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-N(0), high-Tc behavior of Mo0.6Re0.4 and possible Nb3Ge.

Original languageEnglish (US)
Pages (from-to)2987-2990
Number of pages4
JournalPhysical Review Letters
Volume57
Issue number23
DOIs
StatePublished - 1986

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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