2008•Acta Physica Polonica AOpen access

Specific Heat of YbNi4Si Compound

M. Falkowski, A. Kowałczyk, T. Toliński

Abstract

The specific heat of YbNi4Si has been analyzed considering the electronic contribution and the lattice contributions in frames of the Debye model.Based on the specific heat measurements, the electronic specific heat coefficient γ = 25 mJ mol -1 K -2 and the Debye temperature θ D = 320 K were derived.This small value shows that YbNi4Si cannot be classified as a heavy fermion system.These studies are completed by magnetic susceptibility, X-ray photoemission spectroscopy, and electrical resistivity.

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Key concepts: Specific heat, Debye model, Electrical resistivity and conductivity, Debye, Condensed matter physics, Materials science, Photoemission spectroscopy, Heavy fermion