Critical Fields of the "Heavy-Fermion" Superconductor CeCu2Si2

Rauchschwalbe, U.; Lieke, W.; Bredl, C. D.; Steglich, F.; Aarts, J.; Martini, K. M.; Mota, A. C.

doi:10.1103/PhysRevLett.49.1448

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Critical Fields of the "Heavy-Fermion" Superconductor CeCu₂Si₂

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Rauchschwalbe, U., Lieke, W., Bredl, C. D., Steglich, F., Aarts, J., Martini, K. M., et al. (1982). Critical Fields of the "Heavy-Fermion" Superconductor CeCu₂Si₂. Physical Review Letters, 49(19), 1448-1451. doi:10.1103/PhysRevLett.49.1448.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-C295-4

Abstract

Measurements are reported of the lower and upper critical fields, Bc1(T) and Bc2(T), of CeCu2Si2. The observed, extremely high values of the slope (−dBc2dT)Tc0 lend strong support to the formation of Cooper pairs by the heavy fermions which exist in the normal state of CeCu2Si2. Characteristic parameters of the system of heavy fermions are derived.