| Autor: |
Harshman, D. R., Aeppli, G., Espinosa, G. P., Cooper, A. S., Remeika, J. P., Ansaldo, E. J., Riseman, T. M., Williams, D. Ll, Noakes, D. R., Ellman, B., Rosenbaum, T. F. |
| Jazyk: |
angličtina |
| Rok vydání: |
1988 |
| Předmět: |
|
| Popis: |
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. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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