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https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/27502
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| 題名: | Muon spin rotation in Sr2YRu1-uCuuO6 |
| 作者: | Harshman, Dale R.;Blackstead, Howard A.;Kossler, William J.;Greer, Allan J.;Stronach, C. E.;Koster, E.;Hitti, B.;Wu, Maw-Kuen;Chen, D. Y.;錢凡之;Chien, F. Z.;Dow, J. D. |
| 貢獻者: | 淡江大學物理學系 |
| 日期: | 1999-12-20 |
| 上傳時間: | 2009-12-31 10:12:58 (UTC+8) |
| 出版者: | Singapore: World Scientific Publishing |
| 摘要: | The magnetic and superconducting behaviors of sintered Sr2YRu1−uCuuO6 (for u = 0:05, 0.10, 0.15) were probed using transverse- and zero-_eld muon spin rotation (_+SR). In general, positive muons are attracted to oxygen ions in the high-Tc oxides, and so, Sr2YRu1−uCuuO6 should (and does) present two types of _+ sites, those associated with the oxygen in the YRuO4 layers and those associated with the SrO-layer oxygen. The tranverse- and zero-_eld data for all three stoichiometries u exhibit a sudden onset of magnetic structure at TN _ 30 K, with a static local _eld of _ 3 kG. This transition is marked by a dramatic increase in the relaxation rate as the temperature decreases below TN, corresponding to an increased static disordering of the magnetic moments. Above TN no static _elds are observed. Instead the data exhibit a slow dynamic depolarization, presumably due to the rapid fluctuation of paramagnetic moments. Both transverse- and zero-_eld data also indicate a smaller second component (_ 10%) which we associate with the SrO layer, exhibiting superconducting behavior in transverse _eld with an observed Tc _ TN _ 30 K. |
| 關聯: | International Journal of Modern Physics B 13(29-31), pp.3670-3677 |
| DOI: | 10.1142/S0217979299003647 |
| 顯示於類別: | [物理學系暨研究所] 期刊論文
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