ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Pressure-dependent electrical resistivity measurements on CePtGe and CePt2, which belong to the class of magnetically ordering Kondo lattice systems, reveal that the antiferromagnetic transition temperature TN, as determined from the position of the maximum of the derivative dρ/dT, depends only weakly on the applied external pressure. At higher temperatures the shape of the ρ(T) curve indicates the presence of crystal-field effects. Application of pressure does not affect the high-temperature behavior significantly. In view of these results, which suggest a characteristic temperature smaller than TN for these systems, we discuss a steep decrease of the resistivity at T≈10 K in CePtGe and CePt2 in terms of magnetic short-range order between local moments rather than in terms of formation of a coherent Kondo ground state.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.344663
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