Photoemission results of intermetallic superconductors: Nb3Al and MgB2

T. Yokoya, S. Tsuda, A. Chainani, T. Kiss, K. Hirata, Y. Takano, K. Togano, H. Kito, H. Ihara, S. Shin

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

We study the superconducting electronic structures of Nb3Al and MgB2 using high-resolution spectroscopy. The obtained spectrum of Nb3Al measured below Tc shows clear opening of the superconducting gap with a sharp pile up in the density of states and a shift of the leading edge. In addition, the spectrum shows a peak-dip-hump line shape expected from the strong-coupling theory. On the other hand, for MgB2, the superconducting-state spectrum measured at 5.4K shows a coherent peak with a shoulder structure, in sharp contrast to that expected from a single isotropic gap. The superconducting spectral shape of MgB2 can be explained in terms of a multicomponent gap.

Original languageEnglish
Pages (from-to)2141-2144
Number of pages4
JournalJournal of Physics and Chemistry of Solids
Volume63
Issue number12
DOIs
Publication statusPublished - 2002 Dec
EventSNS 2001 - Chicago, IL, United States
Duration: 2001 May 132002 May 17

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics

Fingerprint

Dive into the research topics of 'Photoemission results of intermetallic superconductors: Nb3Al and MgB2'. Together they form a unique fingerprint.

Cite this