Phonon contribution to the transport properties of single-crystal MgB2

T. Masui, K. Yoshida, S. Lee, A. Yamamoto, S. Tajima

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

We extract phonon contributions from the transport properties of a MgB2 single crystal. The temperature dependence of the in-plane resistivity is well explained by the Bloch-Grüneisen formula with the Debye temperature θD∼400 K, taking into account an additional contribution of the E2g phonon mode (∼890 K). In the thermoelectric power, we find a phonon drag peak around 70 K, which gives a consistent estimation of θD with the resistivity result. The pressure dependence of the in-plane resistivity reveals a major contribution of the E2g phonon mode to superconductivity.

Original languageEnglish
Article number214513
Pages (from-to)2145131-2145134
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number21
Publication statusPublished - 2002 Jun 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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