De Haas-van Alphen effect in single crystal MgB2

A. Carrington, J. R. Cooper, N. E. Hussey, P. J. Meeson, E. A. Yelland, S. Lee, A. Yamamoto, S. Tajima

研究成果: Conference article


We present an experimental study of the de Haas-van Alphen effect in single crystals of MgB2, using a piezo-resistive torque technique. Three quasi-particle orbits were observed. Two originate from a single warped Fermi surface tube along the c direction, and the third from a cylindrical section of an in-plane honeycomb network. The quasi-particle effective masses on these orbits were determined and compared to band structure calculations. From this we deduce that the electron-phonon coupling strength λ, is a factor ∼3 larger for the c-axis tube orbits than for the in-plane network orbit, in accord with recent microscopic calculations.

ジャーナルPhysica C: Superconductivity and its applications
出版物ステータスPublished - 2003 5 1
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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  • これを引用

    Carrington, A., Cooper, J. R., Hussey, N. E., Meeson, P. J., Yelland, E. A., Lee, S., Yamamoto, A., & Tajima, S. (2003). De Haas-van Alphen effect in single crystal MgB2. Physica C: Superconductivity and its applications, 388-389, 105-106.