Superconducting gaps of nanocrystalline MgB2

B. Lorenz, O. Perner, J. Eckert, C. W. Chu

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

The superconducting gap structure of nanocrystalline MgB2 is investigated by heat capacity measurements. It is shown that the larger σ-gap decreases as a consequence of defects and impurities introduced by the specifics of the high-energy ball milling synthesis process. This explains the reduction of the critical temperature. The smaller π-gap slightly increases as compared to bulk MgB2 indicating an enhanced interband scattering in the nanocrystalline samples.

原文English
頁(從 - 到)553-554
頁數2
期刊Physica C: Superconductivity and its applications
460-462 I
發行號SPEC. ISS.
DOIs
出版狀態Published - 2007 九月 1

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學
  • 能源工程與電力技術
  • 電氣與電子工程

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