Nuclear magnetic resonance studies of pseudospin fluctuations in URu2Si2
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
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.
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:su:diva-95428DOI: 10.1103/PhysRevB.88.094436ISI: 000324938400003OAI: oai:DiVA.org:su-95428DiVA: diva2:660842