High-pressure transport coefficients of the heavy-fermion superconductor CeCu2Si2

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The electrical resistivity and the absolute thermoelectric power of the dense Kondo compound CeCu2Si2were measured under very high pressures. At low temperatures, the results indicate a transition in the normal-state electronic properties around 20-30 kbar, from a strongly correlated Fermi-liquid regime (the so-called heavy-fermion state) into an IV phase. The crossover is associated with a steep increase of the critical temperature from ∼ 0.9 to ∼ 2 K. It is argued that this behavior may be due to a change from heavy-fermion to normal sd-band superconductivity. © 1985.




Jaccard, D., Mignot, J. M., Bellarbi, B., Benoit, A., Braun, H. F., & Sierro, J. (1985). High-pressure transport coefficients of the heavy-fermion superconductor CeCu2Si2. Journal of Magnetism and Magnetic Materials, 4748(C), 23–29. https://doi.org/10.1016/0304-8853(85)90348-8

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