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  Role of the tuning parameter at magnetic quantum phase transitions

Fritsch, V., Stockert, O., Huang, C.-L., Bagrets, N., Kittler, W., Taubenheim, C., et al. (2015). Role of the tuning parameter at magnetic quantum phase transitions. European Physical Journal - Special Topics, 224(6), 997-1019. doi:10.1140/epjst/e2015-02443-6.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-4FBC-E Version Permalink: http://hdl.handle.net/21.11116/0000-0001-9C6B-8
Genre: Journal Article

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 Creators:
Fritsch, V.1, Author
Stockert, O.2, Author              
Huang, C.-L.1, Author
Bagrets, N.1, Author
Kittler, W.1, Author
Taubenheim, C.1, Author
Pilawa, B.1, Author
Woitschach, S.3, Author              
Huesges, Z.3, Author              
Lucas, Stefan3, Author              
Schneidewind, A.1, Author
Grube, K.1, Author
Löhneysen, H. v.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Oliver Stockert, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863476              
3Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              

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 Abstract: 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 CeCu6-x Au (x) and CePd1-x Ni (x) Al. 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 kagom, 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 CeTi1-x V (x) Ge-3 where CeTiGe3 is a ferromagnet, thus allowing the study of ferromagnetic quantum criticality, a rare case for heavy-fermion systems.

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Language(s): eng - English
 Dates: 2015-07-222015-07-30
 Publication Status: Published in print
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Title: European Physical Journal - Special Topics
  Abbreviation : Eur. Phys. J. Spec. Top.
Source Genre: Journal
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Publ. Info: Berlin, Heidelberg : Springer
Pages: - Volume / Issue: 224 (6) Sequence Number: - Start / End Page: 997 - 1019 Identifier: ISSN: 1951-6355
CoNE: /journals/resource/1000000000277330