New Aspect of Strong Electron-Phonon Coupling Superconductivity
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By reexamining the ordinarry theory of strong electron-phonon coupling superconductivity it is shown theoretically that the phonon and superconducting electron systems should be treated self-consistently and that the phonon renormalization effect gives rise to a new localized phonon mode. This leads to the assertion that a new structure in the superconducting density of states should appear below 2Δ(Δ:the energy gap). Possibility to detect this effect is discussed in the context of new type superconductors. Especially for the charge density wave superconductor 2H-NbSe_2 the electron tunneling measurement is proposed.
- 理論物理学刊行会の論文
- 1981-07-25
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