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Nuclear magnetic resonance studies of pseudospin fluctuations in URu2Si2
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2013 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 88, no 9, 094436- p.Article in journal (Refereed) Published
Abstract [en]

We report Si-29 nuclear magnetic resonance measurements in single crystals and aligned powders of URu2Si2 in the hidden order and paramagnetic phases. The spin-lattice relaxation data reveal evidence of pseudospin fluctuations of U moments in the paramagnetic phase. We find evidence for partial suppression of the density of states below 30 K and analyze the data in terms of a two-component spin-fermion model. We propose that this behavior is a realization of a pseudogap between the hidden-order transition T-HO and 30 K. This behavior is then compared to other materials that demonstrate precursor fluctuations in a pseudogap regime above a ground state with long-range order.

Place, publisher, year, edition, pages
2013. Vol. 88, no 9, 094436- p.
National Category
Condensed Matter Physics
URN: urn:nbn:se:su:diva-95428DOI: 10.1103/PhysRevB.88.094436ISI: 000324938400003OAI: diva2:660842


Available from: 2013-10-31 Created: 2013-10-28 Last updated: 2013-10-31Bibliographically approved

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Balatsky, Alexander V.
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Nordic Institute for Theoretical Physics (Nordita)
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