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 |
| Externally published | Yes |
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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 journal › Article
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TY - JOUR
T1 - Phonon contribution to the transport properties of single-crystal MgB2
AU - Masui, T.
AU - Yoshida, K.
AU - Lee, S.
AU - Yamamoto, Ayako
AU - Tajima, S.
PY - 2002/6/1
Y1 - 2002/6/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0036612189&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036612189&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0036612189
VL - 65
SP - 2145131
EP - 2145134
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 21
M1 - 214513
ER -