Phonon contribution to the transport properties of single-crystal MgB2

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

Research output: Contribution to journalArticle

46 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

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Debye temperature
Thermoelectric power
Superconductivity
Transport properties
Drag
transport properties
Single crystals
electrical resistivity
single crystals
Temperature
pressure dependence
drag
superconductivity
specific heat
temperature dependence

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Phonon contribution to the transport properties of single-crystal MgB2. / Masui, T.; Yoshida, K.; Lee, S.; Yamamoto, Ayako; Tajima, S.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 65, No. 21, 214513, 01.06.2002, p. 2145131-2145134.

Research output: Contribution to journalArticle

Masui, T, Yoshida, K, Lee, S, Yamamoto, A & Tajima, S 2002, 'Phonon contribution to the transport properties of single-crystal MgB2', Physical Review B - Condensed Matter and Materials Physics, vol. 65, no. 21, 214513, pp. 2145131-2145134.
Masui, T. ; Yoshida, K. ; Lee, S. ; Yamamoto, Ayako ; Tajima, S. / Phonon contribution to the transport properties of single-crystal MgB2. In: Physical Review B - Condensed Matter and Materials Physics. 2002 ; Vol. 65, No. 21. pp. 2145131-2145134.
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