Evaluation of bulk-interface contributions to Edelstein magnetoresistance at metal/oxide interfaces
We report a systematic study on Edelstein magnetoresistance (Edelstein MR) in Co25Fe75/Cu/Bi2O3 heterostructures with a strong spin-orbit interaction at the Cu/Bi2O3 interface. We succeed in observing a significant dependence of the Edelstein MR on both Cu layer thickness and temperature, and also d...
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| Veröffentlicht in: | Physical review. B 2017-10, Vol.96 (14), Article 140409 |
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| container_title | Physical review. B |
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| creator | Kim, Junyeon Chen, Yan-Ting Karube, Shutaro Takahashi, Saburo Kondou, Kouta Tatara, Gen Otani, YoshiChika |
| description | We report a systematic study on Edelstein magnetoresistance (Edelstein MR) in Co25Fe75/Cu/Bi2O3 heterostructures with a strong spin-orbit interaction at the Cu/Bi2O3 interface. We succeed in observing a significant dependence of the Edelstein MR on both Cu layer thickness and temperature, and also develop a general analytical model considering distinct bulk and interface contributions on spin relaxation. Our analysis, based on the above model, quantitatively illustrates a unique property of the spin transport near the Rashba interface, revealing a prominent role of the spin relaxation process by determining the ratios of the spin relaxation inside and outside the interface. We further find the characteristic spin transport is unaffected by temperature. Our results provide an essential tool for exploring the transport in a system with spin-momentum-locked two-dimensional states. |
| doi_str_mv | 10.1103/PhysRevB.96.140409 |
| format | Article |
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We succeed in observing a significant dependence of the Edelstein MR on both Cu layer thickness and temperature, and also develop a general analytical model considering distinct bulk and interface contributions on spin relaxation. Our analysis, based on the above model, quantitatively illustrates a unique property of the spin transport near the Rashba interface, revealing a prominent role of the spin relaxation process by determining the ratios of the spin relaxation inside and outside the interface. We further find the characteristic spin transport is unaffected by temperature. 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We succeed in observing a significant dependence of the Edelstein MR on both Cu layer thickness and temperature, and also develop a general analytical model considering distinct bulk and interface contributions on spin relaxation. Our analysis, based on the above model, quantitatively illustrates a unique property of the spin transport near the Rashba interface, revealing a prominent role of the spin relaxation process by determining the ratios of the spin relaxation inside and outside the interface. We further find the characteristic spin transport is unaffected by temperature. Our results provide an essential tool for exploring the transport in a system with spin-momentum-locked two-dimensional states.</abstract><cop>College Park</cop><pub>American Physical Society</pub><doi>10.1103/PhysRevB.96.140409</doi></addata></record> |
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| subjects | Bismuth oxides Bismuth trioxide Dependence Heterostructures Magnetoresistance Magnetoresistivity Mathematical models Spin-orbit interactions Thickness Transport |
| title | Evaluation of bulk-interface contributions to Edelstein magnetoresistance at metal/oxide interfaces |
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