Role of the tuning parameter at magnetic quantum phase transitions

V. Fritsch, O. Stockert, C. L. Huang, N. Bagrets, W. Kittler, C. Taubenheim, B. Pilawa, S. Woitschach, Z. Huesges, S. Lucas, A. Schneidewind, K. Grube, H. V. Löhneysen

研究成果: Review article同行評審

7 引文 斯高帕斯(Scopus)

摘要

Heavy-fermion systems, with their competition between Kondo and RKKY interactions, offer a rich variety of materials that may 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 CeCu6xAux and CePd1xNixAl. While in the former we compare pressure and concentration tuning of the magnetic structure, the latter has the additional feature of geometric frustration due to the distorted kagomè sublattice of Ce atoms in the basal plane. We further present the system CeAu2Ge2 where minor structural differences between crystals grown from Sn or Au-Ge flux lead to pronounced differences in the magnetic structure, with several field-induced phases in samples grown from Au-Ge flux. Finally, non-isoelectronic substitution of Ti by V is studied in CeTi1xVxGe3 where CeTiGe3 is a ferromagnet, thus allowing the study of ferromagnetic quantum criticality, a rare case for heavyfermion systems.

原文English
文章編號A003
頁(從 - 到)997-1019
頁數23
期刊European Physical Journal: Special Topics
224
發行號6
DOIs
出版狀態Published - 2015 七月 1

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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