1. Nuclear magnetic resonance studies of pseudospin fluctuations in URu2Si2
- Author
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Shirer, K. R., Haraldsen, J. T., Dioguardi, A. P., Crocker, J., ApRoberts-Warren, N., Shockley, A. C., Lin, C. -H, Nisson, D. M., Cooley, J. C., Janoschek, M., Huang, K., Kanchanavatee, N., Maple, M. B., Graf, M. J., Balatsky, Alexander V., Curro, N. J., Shirer, K. R., Haraldsen, J. T., Dioguardi, A. P., Crocker, J., ApRoberts-Warren, N., Shockley, A. C., Lin, C. -H, Nisson, D. M., Cooley, J. C., Janoschek, M., Huang, K., Kanchanavatee, N., Maple, M. B., Graf, M. J., Balatsky, Alexander V., and Curro, N. J.
- Abstract
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., AuthorCount:16
- Published
- 2013
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