ELECTRON-SPIN-RESONANCE INVESTIGATION OF THE HEAVY-FERMION COMPOUND CECU2(SI1-XGEX)(2)

Authors
VONNIDDA HAK SCHUTZ A HEIL M ELSCHNER B LOIDL A
Citation
Hak. Vonnidda et al., ELECTRON-SPIN-RESONANCE INVESTIGATION OF THE HEAVY-FERMION COMPOUND CECU2(SI1-XGEX)(2), Applied magnetic resonance, 12(2-3), 1997, pp. 287-298
Citations number
22
Categorie Soggetti
Spectroscopy,"Physics, Atomic, Molecular & Chemical
Journal title
Applied magnetic resonance → ACNP
ISSN journal
09379347
Volume
12
Issue
2-3
Year of publication
1997
Pages
287 - 298
Database
ISI
SICI code
0937-9347(1997)12:2-3<287:EIOTHC>2.0.ZU;2-5
Abstract
The Kondo-lattice system CeCu2(Si1-xGex)(2) exhibits an alloying induc ed transition from a coherent Fermi-liquid (x = 0) with strongly enhan ced effective masses to an antiferromagnetically ordered heavy-fermion system (x = 1). This transition is studied by Gd3+ ESR in oriented po wder samples. The temperature dependence of the ESR line width follows a characteristic pattern which allows one to distinguish between the different ground states. The results obtained in polycrystalline CeCu2 Si2 are in good agreement with the measurements performed in single cr ystals. Finally we compare our results with Cu-63-NMR data obtained fr om CeCu2Si2 and CeCu2Ge2.