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Photoemission spectroscopy of the strong-coupling superconducting transitions in lead and niobium | | A Chainani
; T Yokoya
; T Kiss
; S Shin
; | | Date: |
28 Aug 2000 | | Journal: | Phys Rev Lett, 85 (9), 1966-9 | | Abstract: | We study the changes in the electronic structure associated with low- T(c) 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- T(c) cuprates is seen in Pb, making it a characteristic of strong-coupling superconductivity. | | Source: | PubMed, pmid10970659 | | Services: | Forum | Review | Favorites | |
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