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  Hidden and magnetic order in powdered URu2Si2 found by NMR at ambient pressure

Bernal, O. O., Moroz, M. E., MacLaughlin, D. E., Lukefahr, H. G., Mydosh, J. A., & Gortenmulder, T. J. (2005). Hidden and magnetic order in powdered URu2Si2 found by NMR at ambient pressure. Physica B-Condensed Matter, 359-361, 994-996. doi:10.1016/j.physb.2005.01.319.

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 Urheber:
Bernal, O. O., Autor
Moroz, M. E., Autor
MacLaughlin, D. E., Autor
Lukefahr, H. G., Autor
Mydosh, J. A.1, Autor           
Gortenmulder, T. J., Autor
Affiliations:
1Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              

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 Zusammenfassung: Below the hidden order transition temperature View the MathML sourceT0∼17K, ambient pressure 29Si and 99Ru NMR spectra in an aligned powder of URu2Si2 reveal local internal field distributions at both 29Si and 99Ru sites. For a longitudinal field orientation, the 99Ru spectral parameters also reveal a second transition temperature View the MathML sourceT*∼12K, below which an anomalous increase in the linewidth is observed, accompanied by a kink in the Knight shift vs. magnetic susceptibility plot. From temperature and applied-field orientation studies, we can separate the two types of linewidth contributions, and find that the distribution of internal fields arising below T0T0 is anisotropic at 99Ru positions, with larger widths in the ab -plane. The second contribution to the linewidth appears below T*T* and has Ising symmetry. We discuss disorder in the non-magnetic sector as a way to understand our measurements and reconcile them with recent pressure experiments by other groups.

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Sprache(n): eng - English
 Datum: 2005-04-30
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: eDoc: 242018
DOI: 10.1016/j.physb.2005.01.319
 Art des Abschluß: -

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Titel: Physica B-Condensed Matter
  Andere : Physica B
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Amsterdam : North-Holland
Seiten: - Band / Heft: 359-361 Artikelnummer: - Start- / Endseite: 994 - 996 Identifikator: ISSN: 0921-4526
CoNE: https://pure.mpg.de/cone/journals/resource/954928575733