Observation of a Schottky Anomaly in the Specific Heat of the Heavy-Fermion 
Compound UBe13

Felten, R.; Steglich, F.; Weber, G.; Rietschel, H.; Gompf, F.; Renker, B.; Beuers, J.

doi:10.1209/0295-5075/2/4/010

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Observation of a Schottky Anomaly in the Specific Heat of the Heavy-Fermion Compound UBe₁₃

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Citation

Felten, R., Steglich, F., Weber, G., Rietschel, H., Gompf, F., Renker, B., et al. (1986). Observation of a Schottky Anomaly in the Specific Heat of the Heavy-Fermion Compound UBe₁₃. EPL, 2(4), 323-329. doi:10.1209/0295-5075/2/4/010.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-CF1F-8

Abstract

We present the results of calorimetric measurements of the specific heat in UBe13 and ThBe13 in the temperature range 20 K lesssim T lesssim 120 K. Combined with earlier results of inelastic neutron scattering, the data allow the extraction of the electronic specific heat ΔC in UBe13. ΔC shows a pronounced peak around 70 K which we interpret as a Schottky anomaly due to crystal-field splitting of a 5f3 ground-state configuration. Our results suggest the existence of highly localized 5f electrons in the heavy-fermion compound UBe13.