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 language | English |
|---|---|
| Article number | 214513 |
| Pages (from-to) | 2145131-2145134 |
| Number of pages | 4 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 65 |
| Issue number | 21 |
| Publication status | Published - 2002 Jun 1 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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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, 65(21), 2145131-2145134. [214513].