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Journal Article

Unusual B-T phase diagram of the heavy-fermion superconductor CeCu2Si2

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Bruls, G., Wolf, B., Finsterbusch, D., Thalmeier, P., Kouroudis, I., Sun, W., et al. (1994). Unusual B-T phase diagram of the heavy-fermion superconductor CeCu2Si2. Physical Review Letters, 72(11), 1754-1757. doi:10.1103/PhysRevLett.72.1754.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-DD7E-3
Elastic constant and thermal expansion data for a high quality single crystal of CeCu2Si2 are presented. The data yield a detailed B-T phase diagram exhibiting a previously unknown high-field phase. From the unusual behavior of the elastic constants and the thermal expansion on entering the superconducting phase we deduce that, in contrast to other heavy-fermion superconductors, the superconducting phase of CeCU2Si2 does not coexist with the surrounding phase.