A Raman scattering study of superconductivity in MgB2

James W. Quilty, Sergey Lee, Ayako Yamamoto, Setsuko Tajima, Akio Yamanaka

研究成果: Conference article

7 引用 (Scopus)


Measurements of the in-plane and out-of-plane electronic Raman continuum in MgB2 single crystals show markedly different behaviour below Tc, indicative of a complex gap structure. In xx and xy polarisation configurations, a sharp pair-breaking peak is seen near 100 cm-1 but no scattering threshold forms directly below the peak. In zz and zx polarisations, a threshold is seen at 30 cm-1 but no pair-breaking peak appears. This behaviour can be understood in terms of band-dependent impurity scattering effects on two separate gaps.

ジャーナルPhysica C: Superconductivity and its applications
出版物ステータスPublished - 2003 5
イベントproceedings of the 23rd international conference on low temper - Hiroshima, Japan
継続期間: 2002 8 202002 8 27

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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