Abstract
We have measured the magnetization of the heavy fermion compound CeRu 2 Si 2 at temperatures down to 300 μK. We observed that the dc-magnetic susceptibility had the plateau due to the Pauli susceptibility between 50 mK and 2 K, and the upturn from this plateau toward lower temperatures. This excess susceptibility shows a Curie- Weiss behavior with a slight signature of saturation at the lowest temperature. This fact indicates that CeRu 2 Si 2 has the small residual magnetic moments in its ground state.
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Abe, S., Takahashi, D., Shiratori, S. et al. Magnetization Measurements of CeRu2Si2 at Millikelvin Temperatures. Journal of Low Temperature Physics 113, 1061–1066 (1998). https://doi.org/10.1023/A:1022568720592
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DOI: https://doi.org/10.1023/A:1022568720592