TY - JOUR
T1 - Anomalous temperature dependence of the resistivity of some intermetallic compounds
AU - Weger, M.
AU - De Groot, R. A.
AU - Mueller, F. M.
AU - Kaveh, M.
PY - 1984
Y1 - 1984
N2 - The resistivity rho of some intermetallic compounds such as Nb 3Sn, V3Si, UAl2, etc. has an anomaly at a temperature T0 near 100K. The resistivity rises steeply with T below T0 and less steeply above it. Here the authors account for this anomalous temperature dependence using the 'classical' s-d model. Below T 0 the s-like and d-like states are hybridised by a small electronic matrix element Jsd (Jsd approximately=10-50 meV) and the electron-phonon coupling constant lambda is large. Above T0 the electron-phonon scattering rate h(cross)/ tau exceeds Jsd, and the s-like and d-like states are decoupled. The electrical conductivity is then due mainly to the s-like states which possess a smaller electron-phonon coupling constant lambda , giving rise to a smaller value of d rho /dT. The anomaly occurs when the mean free path l is about an order of magnitude larger than the interatomic spacing d.
AB - The resistivity rho of some intermetallic compounds such as Nb 3Sn, V3Si, UAl2, etc. has an anomaly at a temperature T0 near 100K. The resistivity rises steeply with T below T0 and less steeply above it. Here the authors account for this anomalous temperature dependence using the 'classical' s-d model. Below T 0 the s-like and d-like states are hybridised by a small electronic matrix element Jsd (Jsd approximately=10-50 meV) and the electron-phonon coupling constant lambda is large. Above T0 the electron-phonon scattering rate h(cross)/ tau exceeds Jsd, and the s-like and d-like states are decoupled. The electrical conductivity is then due mainly to the s-like states which possess a smaller electron-phonon coupling constant lambda , giving rise to a smaller value of d rho /dT. The anomaly occurs when the mean free path l is about an order of magnitude larger than the interatomic spacing d.
UR - http://www.scopus.com/inward/record.url?scp=33646868727&partnerID=8YFLogxK
U2 - 10.1088/0305-4608/14/10/003
DO - 10.1088/0305-4608/14/10/003
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AN - SCOPUS:33646868727
SN - 0305-4608
VL - 14
SP - L207-L213
JO - Journal of Physics F: Metal Physics
JF - Journal of Physics F: Metal Physics
IS - 10
M1 - 003
ER -