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arXiv · 0707.2518

Positive and negative pressure effects on the magnetic ordering and the Kondo effect in the compound Ce2RhSi3

T. Nakano·Kausik Sengupta·Sudhindra Rayaprol·M. Hedo·Y. Uwatoko·E. V. Sampathkumaran
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Abstract

The competition between magnetic ordering and the Kondo effect in Ce2RhSi3, ordering antiferromagnetically at 7 K, is investigated by the measurements of magnetization, heat capacity and electrical resistivity on the solid solutions, Ce(2-x)La(x)RhSi3, Ce(2-y)Y(y)RhSi3, and Ce2RhSi(3-z)Ge(z), as well as by high pressure studies on this compound. The trends in the Kondo and Neel temperature variations among these alloys are compared to infer the roles of unit-cell volume and electronic structure changes. On the basis of the results, we infer that this compound lies at the peak of Doniach-magnetic-phase-diagram. The high pressure electrical resistivity data indicate that the quantum critical point for this compound is in the vicinity of 4 GPa.

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T. Nakano, Kausik Sengupta, Sudhindra Rayaprol, M. Hedo, Y. Uwatoko, E. V. Sampathkumaran. 2007-07-17. Positive and negative pressure effects on the magnetic ordering and the Kondo effect in the compound Ce2RhSi3. https://doi.org/10.1088/0953-8984%2F19%2F32%2F326205

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