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| 題名: | Spin pump and probe in lanthanum strontium manganite/platinum bilayers |
| 作者: | Luo, GY (Luo, G. Y.)
Lin, JG (Lin, J. G.)
Chiang, WC (Chiang, Wen-Chung)
Chang, CR (Chang, Ching-Ray) |
| 貢獻者: | 物理系 |
| 日期: | 2017-07-26 |
| 上傳時間: | 2018-01-30 15:11:11 (UTC+8) |
| 摘要: | Ferromagnetic resonance driven spin pumping (FMR-SP) is a novel method to transfer spin current from the ferromagnetic (FM) layer into the adjacent normal metal (NM) layer in an FM/NM bilayer system. Consequently, the spin current could be probed in NM layer via inverse spin Hall effect (ISHE). In spite of numerous ISHE studies on FM/Pt bilayers, La0.7Sr0.3MnO3(LSMO)/Pt system has been less explored and its relevant information about interface property (characterized by spin mixing conductance) and spin-charge conversion efficiency (characterized by spin Hall angle) is a matter of importance for the possible applications of spintronic devices. In this work, the technique of FMR-SP has been applied on two series of LSMO/Pt bilayers with the thickness of each layer being varied. The thickness dependences of ISHE voltage allow to extract the values of spin mixing conductance and spin Hall angle of LSMO/Pt bilayers, which are (1.8 +/- 0.4) x 10(19) m(-2) and (1.2 +/- 0.1) % respectively. In comparison with other FM/Pt systems, LSMO/Pt has comparable spin current density and spin mixing conductance, regardless its distinct electronic structure from other ferromagnetic metals. |
| 關聯: | SCIENTIFIC REPORTS 卷: 7 文獻號碼: 6612 |
| 顯示於類別: | [光電物理系] 期刊論文
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