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          Institute: MPI für Chemische Physik fester Stoffe     Collection: publications 2013     Display Documents



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ID: 668727.0, MPI für Chemische Physik fester Stoffe / publications 2013
Doped YbRh2Si2: Not Only Ferromagnetic Correlations but Ferromagnetic Order
Authors:Lausberg, S.; Hannaske, A.; Steppke, A.; Steinke, L.; Gruner, T.; Pedrero, L.; Krellner, C.; Klingner, C.; Brando, M.; Geibel, C.; Steglich, F.
Language:English
Date of Publication (YYYY-MM-DD):2013-06-21
Title of Journal:Physical Review Letters
Volume:110
Issue / Number:25
Start Page:256402-1
End Page:256402-5
Sequence Number of Article:256402
Review Status:not specified
Audience:Not Specified
Abstract / Description:YbRh2Si2 is a prototypical system for studying unconventional antiferromagnetic quantum criticality. However, ferromagnetic correlations are present which can be enhanced via isoelectronic cobalt substitution for rhodium in Yb(Rh1-xCox)(2)Si-2. So far, the magnetic order with increasing x was believed to remain antiferromagnetic. Here, we present the discovery of ferromagnetism for x = 0: 27 below T-C = 1: 30 K in single crystalline samples. Unexpectedly, ordering occurs along the c axis, the hard crystalline electric field direction, where the g factor is an order of magnitude smaller than in the basal plane. Although the spontaneous magnetization is only 0.1 mu(B)= Yb it corresponds to the full expected saturation moment along c taking into account partial Kondo screening.
Comment of the Author/Creator:Date: 2013, JUN 18 2013
External Publication Status:published
Document Type:Article
Communicated by:Ina Werner
Affiliations:MPI für chemische Physik fester Stoffe
Identifiers:ISI:000320645800017 [ID No:1]
ISSN:0031-9007 [ID No:2]
DOI:10.1103/PhysRevLett.110.256402
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