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Freezing of spin and charge in La_(2-x)Sr_xCuO_4

Harshman, D. R. and Aeppli, G. and Espinosa, G. P. and Cooper, A. S. and Remeika, J. P. and Ansaldo, E. J. and Riseman, T. M. and Williams, D. Ll and Noakes, D. R. and Ellman, B. and Rosenbaum, T. F. (1988) Freezing of spin and charge in La_(2-x)Sr_xCuO_4. Physical Review B, 38 (1). pp. 852-855. ISSN 1098-0121. doi:10.1103/PhysRevB.38.852.

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Zero- and longitudinal-field muon-spin relaxation μ+SR measurements have been performed on La_(2-x)Sr_xCuO_4 alloys in both single-crystal and sintered powder forms above and below their magnetic transition temperatures, T_f. The μ+ precession frequency v depends only weakly on x and T_f, an observation which together with resistivity data implies classical freezing of magnetic moments in the regime where the carriers are localized. For x=0.05, critical dynamics are observed near T_f. The μ^+SR technique is shown to be very sensitive to ferromagnetically aligned pairs of Cu^(2+) moments; the population of such pairs increases greatly with x.

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Alternate Title:Freezing of spin and charge in La2-xSrxCuO4
Additional Information:© 1988 The American Physical Society. Received 14 January 1988. We thank K. Hoyle, R. Keitel, and J. Worden for technical assistance. We also acknowledge helpful discussions with J. H. Brewer, Z. Fisk, P. Littlewood, D. Monroe, and C. M. Varma. Research at TRIUMF and University of Chicago are supported by the Natural Sciences and Engineering Research Council of Canada and National Science Foundation Grant No. DMR-85-17478, respectively.
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Natural Sciences and Engineering Research Council (Canada)UNSPECIFIED
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ID Code:47030
Deposited By: George Porter
Deposited On:09 Jul 2014 16:37
Last Modified:10 Nov 2021 17:33

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