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Specific heat, resistivity and neutron scattering studies in the Kondo lattice CeNi2Ge2

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Citation

Knopp, G., Loidl, A., Caspary, R., Gottwick, U., Bredl, C. D., Spille, H., et al. (1988). Specific heat, resistivity and neutron scattering studies in the Kondo lattice CeNi2Ge2. Journal of Magnetism and Magnetic Materials, 74(3), 341-346. doi:10.1016/0304-8853(88)90209-0.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0019-CF95-D
Abstract
Specific heat, resistivity and inelastic neutron scattering experiments are reported, which demonstrate that CeNi2Ge2 exhibits a heavy-fermion groundstate which is neither magnetic nor superconducting. The specific heat coefficient γ(T) reaches 350 mJ/K2mol and exhibits a peak at 0.4 K showing that coherence effects become important at low temperatures. The magnetic relaxation rates as measured via the line width in inelastic neutron scattering experiments are strongly enhanced and deviate from a Korringa law behaviour. The Kondo temperature TK ≈ 30 K was determined from the magnetic relaxation rates and from the specific heat data.