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  Doped YbRh2Si2: Not Only Ferromagnetic Correlations but Ferromagnetic Order

Lausberg, S., Hannaske, A., Steppke, A., Steinke, L., Gruner, T., Pedrero, L., et al. (2013). Doped YbRh2Si2: Not Only Ferromagnetic Correlations but Ferromagnetic Order. Physical Review Letters, 110(25): 256402, pp. 1-5. doi:10.1103/PhysRevLett.110.256402.

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Lausberg, S.1, Autor           
Hannaske, A.2, Autor           
Steppke, A.1, Autor           
Steinke, L.1, Autor           
Gruner, T.1, Autor           
Pedrero, L.1, Autor           
Krellner, C.1, Autor           
Klingner, C.2, Autor           
Brando, M.3, Autor           
Geibel, C.4, Autor           
Steglich, F.5, Autor           
Affiliations:
1Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
2Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
3Manuel Brando, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863469              
4Christoph Geibel, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863465              
5Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863467              

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 Zusammenfassung: 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.

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Sprache(n): eng - English
 Datum: 2013-06-21
 Publikationsstatus: Erschienen
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 Ort, Verlag, Ausgabe: -
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 Art der Begutachtung: -
 Identifikatoren: eDoc: 668727
ISI: 000320645800017
DOI: 10.1103/PhysRevLett.110.256402
 Art des Abschluß: -

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Titel: Physical Review Letters
  Kurztitel : Phys. Rev. Lett.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Woodbury, N.Y. : American Physical Society
Seiten: - Band / Heft: 110 (25) Artikelnummer: 256402 Start- / Endseite: 1 - 5 Identifikator: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1