Photoemission spectroscopy of the strong-coupling superconducting transitions in lead and niobium

A. Chainani, T. Yokoya, T. Kiss, S. Shin

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

We study the changes in the electronic structure associated with low-Tc strong-coupling superconducting transitions in Pb and Nb using ultrahigh-resolution (2.3 meV) temperature-dependent (5.3-12.0 K) photoemission spectroscopy. We observe peaks in the density of states on entering the superconducting-phase accompanying gap formation and spectacular redistribution of spectral weight at low energy scales as a function of temperature. The well-known peak-dip feature of the high-Tc cuprates is seen in Pb, making it a characteristic of strong-coupling superconductivity.

Original languageEnglish
Pages (from-to)1966-1969
Number of pages4
JournalPhysical Review Letters
Volume85
Issue number9
DOIs
Publication statusPublished - Jan 1 2000
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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