TY  - JOUR
AU  - Fritsch, V.
AU  - Stockert, O.
AU  - Huang, C.-L.
AU  - Bagrets, N.
AU  - Kittler, W.
AU  - Taubenheim, C.
AU  - Pilawa, B.
AU  - Woitschach, S.
AU  - Huesges, Z.
AU  - Lucas, S.
AU  - Schneidewind, A.
AU  - Grube, K.
AU  - Löhneysen, H. v.
TI  - Role of the tuning parameter at magnetic quantum phase transitions
JO  - European physical journal special topics
VL  - 224
IS  - 6
SN  - 1951-6401
CY  - Berlin
PB  - Springer
M1  - FZJ-2015-04981
SP  - 997 - 1019
PY  - 2015
AB  - Heavy-fermion systems, with their competition betweenKondo and RKKY interactions, offer a rich variety of materials thatmay be driven to a magnetic quantum phase transition. Quite often,a quantum critical point can be approached by chemical substitution,notably of isoelectric ligands of Ce, as in CeCu6−xAux andCePd1−xNixAl. While in the former we compare pressure and concentrationtuning of the magnetic structure, the latter has the additionalfeature of geometric frustration due to the distorted kagom´e sublatticeof Ce atoms in the basal plane. We further present the systemCeAu2Ge2 where minor structural differences between crystals grownfrom Sn or Au-Ge flux lead to pronounced differences in the magneticstructure, with several field-induced phases in samples grown fromAu-Ge flux. Finally, non-isoelectronic substitution of Ti by V is studiedin CeTi1−xVxGe3 where CeTiGe3 is a ferromagnet, thus allowingthe study of ferromagnetic quantum criticality, a rare case for heavyfermionsystems.
LB  - PUB:(DE-HGF)16 ; PUB:(DE-HGF)36
UR  - <Go to ISI:>//WOS:000357489600003
DO  - DOI:10.1140/epjst/e2015-02443-6
UR  - https://juser.fz-juelich.de/record/202820
ER  -