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題名 Spin chemical potential bias induced surface current evidenced by spin pumping into the topological insulator B i2 T e3
作者 Abdulahad, Faris Basheer;Lin, Jin-Han;Liou, Yung;Chiu, Wen-Kai;Chang, Liang-Juan;Kao, Ming-Yi;Liang, Jun-Zhi;Hung, Dung-Shing;Lee, and Shang-Fan
貢獻者 應物所
日期 2015-12
上傳時間 7-Aug-2017 17:45:36 (UTC+8)
摘要 A spin chemical potential bias can induce a spin-polarized current by the exchange interaction of a ferromagnet with the spin-momentum locking surface states of the topological insulators. We carried out our ferromagnetic resonance experiment in a NiFe/Bi2Te3 heterostructure. Apart from the enhanced Gilbert damping constant, we observed strong enhancement of the effective magnetic field at low temperatures. The enhanced field decreased exponentially with increasing temperature at an energy scale of 2.5 meV, representing the strength of the exchange coupling. We attribute the enhanced field to the induced spin-polarized current in the surface states of Bi2Te3. ©2015 American Physical Society.
關聯 Physical Review B - Condensed Matter and Materials Physics, 92(24), 241304(R)
資料類型 article
DOI http://dx.doi.org/10.1103/PhysRevB.92.241304
dc.contributor 應物所zh_Tw
dc.creator (作者) Abdulahad, Faris Basheer;Lin, Jin-Han;Liou, Yung;Chiu, Wen-Kai;Chang, Liang-Juan;Kao, Ming-Yi;Liang, Jun-Zhi;Hung, Dung-Shing;Lee, and Shang-Fanen_US
dc.date (日期) 2015-12en_US
dc.date.accessioned 7-Aug-2017 17:45:36 (UTC+8)-
dc.date.available 7-Aug-2017 17:45:36 (UTC+8)-
dc.date.issued (上傳時間) 7-Aug-2017 17:45:36 (UTC+8)-
dc.identifier.uri (URI) http://nccur.lib.nccu.edu.tw/handle/140.119/111658-
dc.description.abstract (摘要) A spin chemical potential bias can induce a spin-polarized current by the exchange interaction of a ferromagnet with the spin-momentum locking surface states of the topological insulators. We carried out our ferromagnetic resonance experiment in a NiFe/Bi2Te3 heterostructure. Apart from the enhanced Gilbert damping constant, we observed strong enhancement of the effective magnetic field at low temperatures. The enhanced field decreased exponentially with increasing temperature at an energy scale of 2.5 meV, representing the strength of the exchange coupling. We attribute the enhanced field to the induced spin-polarized current in the surface states of Bi2Te3. ©2015 American Physical Society.en_US
dc.format.extent 618422 bytes-
dc.format.mimetype application/pdf-
dc.relation (關聯) Physical Review B - Condensed Matter and Materials Physics, 92(24), 241304(R)en_US
dc.title (題名) Spin chemical potential bias induced surface current evidenced by spin pumping into the topological insulator B i2 T e3en_US
dc.type (資料類型) article
dc.identifier.doi (DOI) 10.1103/PhysRevB.92.241304
dc.doi.uri (DOI) http://dx.doi.org/10.1103/PhysRevB.92.241304