Observation of a high-field anomaly in the low-temperature specific heat of CeCu
2Si2

Andraka, B.; Stewart, G. R.; Steglich, F.

doi:10.1103/PhysRevB.48.3939

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Observation of a high-field anomaly in the low-temperature specific heat of CeCu₂Si₂

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Andraka, B., Stewart, G. R., & Steglich, F. (1993). Observation of a high-field anomaly in the low-temperature specific heat of CeCu₂Si₂. Physical Review B, 48(6), 3939-3942. doi:10.1103/PhysRevB.48.3939.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-DCF0-5

Abstract

We have performed high-magnetic-field, to 16 T, low-temperature specific-heat measurements for CeCu2.2Si2, CeCu2Si2, and CeCu1.9Si2. The first two materials, which are superconducting, exhibit a pronounced structure in C/T at T is similar to 0.6 K and H greater-than-or-equal 10 T. Changing the field from 10 to 16 T does not affect the anomaly. The nonsuperconducting, CeCu1.9Si2, sample does not exhibit a similar anomaly in the investigated temperature range, 0.32-1 K. Possible correlations between this structure and the low-temperature, high-field phase diagram of CeCu2Si2 are discussed.