CeCu2Si2 and UPt3: Two different cases of heavy fermion superconductivity

Steglich, F.; Ahlheim, U.; Franse, J. J. M.; Grewe, N.; Rainer, D.; Rauchschwalbe, U.

doi:10.1016/0304-8853(85)90226-4

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

CeCu₂Si₂ and UPt₃: Two different cases of heavy fermion superconductivity

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

Steglich, F., Ahlheim, U., Franse, J. J. M., Grewe, N., Rainer, D., & Rauchschwalbe, U. (1985). CeCu₂Si₂ and UPt₃: Two different cases of heavy fermion superconductivity. Journal of Magnetism and Magnetic Materials, 52(1-4), 54-60. doi:10.1016/0304-8853(85)90226-4.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-CEE8-A

Abstract

Specific heat and thermal conductivity in the superconducting state of the Kondo-lattice system CeCu2Si2 and the paramagnon system UPt3 point to substantial mass anisotropies at the Fermi surface (FS): while in CeCu2Si2 bare band electrons at certain portions of the FS seem to remain normal, in UPt3 heavier fermions seem to stay normal and Cooper pairs are formed by somewhat less heavy ones. The upper critical field of UPt3 shows no influence of Pauli limiting and can reasonably well be explained with S = 0 as well as S = 1 pairing. CeCu2Si2 is strongly Pauli limited, independent of orientation. This substantiates recent Josephson experiments which show that CeCu2Si2 is a singlet superconductor.