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Heavy Fermions in Strongly Correlated Electron System CeAl3

N. E. Sluchanko·V. V. Glushkov·S. V. Demishev·N. A. Samarin·G. S. Burhanov·O. D. Chistiakov·D. N. Sluchanko
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Abstract

High precision measurements of the Hall effect have been carried out for archetypal heavy fermion compound - CeAl3 in a wide range of temperatures 1.8-300K. For the first time a complex activated behavior of the Hall coefficient in CeAl3 with activation energies Ea1/kB=220K and Ea2/kB=3.3K has been observed in the temperature intervals 50-300K and 10-35K respectively. At temperatures below the maximum of the Hall effect T<Tmax=10K an asymptotic dependence RH(T)=exp(-Ea3/kBT) was found in CeAl3 with the value Ea3/kB=0.38K estimated from the experimental data. The temperature evolution of microscopic parameters (effective mass and localization radius) evaluated for the many-body states (heavy fermions) is discussed in terms of an electron-polaron states formation in vicinity of Ce-sites in the CeAl3 matrix.

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N. E. Sluchanko, V. V. Glushkov, S. V. Demishev, N. A. Samarin, G. S. Burhanov, O. D. Chistiakov, D. N. Sluchanko. 2005-06-08. Heavy Fermions in Strongly Correlated Electron System CeAl3. https://arxiv.org/abs/cond-mat/0505386

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