Resonant photoemission studies of the Kondo-lattice systems CeCu2Si2, CeAg2Si2, 
CeAu2Si2, and CePd2Si2

Parks, R. D.; Reihl, B.; Mårtensson, N.; Steglich, F.

doi:10.1103/PhysRevB.27.6052

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Resonant photoemission studies of the Kondo-lattice systems CeCu₂Si₂, CeAg₂Si₂, CeAu₂Si₂, and CePd₂Si₂

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

Parks, R. D., Reihl, B., Mårtensson, N., & Steglich, F. (1983). Resonant photoemission studies of the Kondo-lattice systems CeCu₂Si₂, CeAg₂Si₂, CeAu₂Si₂, and CePd₂Si₂. Physical Review B, 27(10), 6052-6057. doi:10.1103/PhysRevB.27.6052.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-C29B-7

Abstract

Photoemission experiments performed at an incident photon energy of 70 eV provide a clear view of the transition-element-derived d bands in the systems CeT2Si2, with T=Cu,Ag,Au,andPd. Spectra taken at hν=122 eV display both a resonant 4f emission at 2-3 eV below EF, and a resonant emission near EF. The total intensity of the latter feature, which has been observed in other Ce-based systems and identified as having strong 4f character in γ-cerium and CeAl2, appears to track the intensities of the transition-element-derived d density of states near EF. In superconducting CeCu2Si2, the EF feature has its maximum at 0.25 eV, whereas we find it at significantly higher binding energies (∼0.6 eV) in the three magnetic systems (T=Ag,Au,andPd). This observation suggests markedly smaller electronic specific-heat (γ) values in the magnetic compounds as compared with γ≃1 J mole−1 K−2 generated by heavy fermions in CeCu2Si2.