Cooperative Effects in CeCu2Si2

Lang, M.; Modler, R.; Ahlheim, U.; Helfrich, R.; Reinders, P. H. P.; Steglich, F.; Assmus, W.; Sun, W.; Bruls, G.; Weber, D.; Lüthi, B.

doi:10.1088/0031-8949/1991/T39/020

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Cooperative Effects in CeCu₂Si₂

MPS-Authors

There are no MPG-Authors in the publication available

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Lang, M., Modler, R., Ahlheim, U., Helfrich, R., Reinders, P. H. P., Steglich, F., et al. (1991). Cooperative Effects in CeCu₂Si₂. Physica Scripta, T39, 135-139. doi:10.1088/0031-8949/1991/T39/020.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-D6D8-2

Abstract

Heavy-fermion superconductivity and other cooperative effects have been explored by thermal expansion, specific heat and ultrasound measurements on CeCu2Si2 single crystals. Crystals annealed under Cu atmosphere show sharp superconducting transitions at T(c)max = 0.63 K. At the same temperature the "as grown", i.e., non-bulk-superconducting, crystals reveal a pronounced phase-transition anomaly, presumably of structural origin. This new transition is associated with an expansion of the volume upon cooling and gives rise to magnetic correlations. Our results indicate a complex interplay between lattice instability, magnetic phenomena and superconductivity in CeCu2Si2.