%0 Journal Article
%A Fritsch, V.
%A Stockert, O.
%A Huang, C.-L.
%A Bagrets, N.
%A Kittler, W.
%A Taubenheim, C.
%A Pilawa, B.
%A Woitschach, S.
%A Huesges, Z.
%A Lucas, S.
%A Schneidewind, A.
%A Grube, K.
%A Löhneysen, H. v.
%T Role of the tuning parameter at magnetic quantum phase transitions
%J European physical journal special topics
%V 224
%N 6
%@ 1951-6401
%C Berlin
%I Springer
%M FZJ-2015-04981
%P 997 - 1019
%D 2015
%X 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.
%F PUB:(DE-HGF)16 ; PUB:(DE-HGF)36
%9 Journal ArticleReview
%U <Go to ISI:>//WOS:000357489600003
%R 10.1140/epjst/e2015-02443-6
%U https://juser.fz-juelich.de/record/202820