Effect of electron-phonon interaction on resistivity of some heavy fermion (HF) systems

Journal Article · Thu Apr 24 00:00:00 EDT 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4872867· OSTI ID:22269239

Shadangi, N. ^[1]; Nayak, P. ^[2]

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1. Dept. of Physics, Silicon Institute of Technology, Sambalpur, Odisha-768200 (India)
2. School of Physics, Sambalpur University, Sambalpur, Odisha-768019 (India)

Here, we have analyzed the electron-phonon interaction in the Periodic Anderson Model (PAM) to describe the temperature dependence of resistivity in some heavy fermion (HF) systems for finite wave vector (q) and for finite temperature (T). Since the resistivity is related to the imaginary part of the electron self energy, the expression for the same is evaluated through double time temperature dependant Green function technique of the Zubarev type. The effect of different system parameters namely the position of 4f level, E{sub 0} and the electron - phonon coupling strengths on resistivity have been studied. The results obtained give satisfactory explanations to the experimental observations.

• OSTI ID: 22269239
• Journal Information: AIP Conference Proceedings, Vol. 1591, Issue 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ELECTRON-PHONON COUPLING
ELECTRONS
GREEN FUNCTION
TEMPERATURE DEPENDENCE