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

研究成果: Conference article同行評審

2 引文 斯高帕斯(Scopus)

摘要

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.

原文English
頁(從 - 到)2141-2144
頁數4
期刊Journal of Physics and Chemistry of Solids
63
發行號12
DOIs
出版狀態Published - 2002 十二月
事件SNS 2001 - Chicago, IL, United States
持續時間: 2001 五月 132002 五月 17

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 材料科學(全部)
  • 凝聚態物理學

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