Yuki Shiomi: Difference between revisions
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==Abstract== | ==Abstract== | ||
Detection and manipulation of electron spin are the key prerequisites for spintronics. Here, we report spin pumping experiments for topological materials: topological insulators [1] and skyrmion crystals [2]. Using bulk-insulating topological-insulator materials Bi<sub>1.5</sub>Sb<sub>0.5</sub> | Detection and manipulation of electron spin are the key prerequisites for spintronics. Here, we report spin pumping experiments for topological materials: topological insulators [1] and skyrmion crystals [2]. Using bulk-insulating topological-insulator materials Bi<sub>1.5</sub>Sb<sub>0.5</sub>Te<sub>1.7</sub>Se<sub>1.3</sub> and Sn-doped Bi<sub>2</sub>Te<sub>2</sub>Se, we successfully observed spin-electricity conversion due to the spin-momentum locking on the topological surface state [1]. For skyrmion crystals, we demonstrated the spin current injection from the skyrmion crystal phase of Cu<sub>2</sub>OSeO<sub>3</sub> to an attached Pt film [2]. These results should be important for future spintronics application of topological insulators and skyrmion crystals. | ||
==References== | ==References== | ||
Revision as of 06:52, 11 August 2015
Affiliations
- Institute for Materials Research, Tohoku University, Japan
- ERATO-SQR, JST, Japan
Title
Spin pumping experiments in topological insulators and skyrmion crystals
Abstract
Detection and manipulation of electron spin are the key prerequisites for spintronics. Here, we report spin pumping experiments for topological materials: topological insulators [1] and skyrmion crystals [2]. Using bulk-insulating topological-insulator materials Bi1.5Sb0.5Te1.7Se1.3 and Sn-doped Bi2Te2Se, we successfully observed spin-electricity conversion due to the spin-momentum locking on the topological surface state [1]. For skyrmion crystals, we demonstrated the spin current injection from the skyrmion crystal phase of Cu2OSeO3 to an attached Pt film [2]. These results should be important for future spintronics application of topological insulators and skyrmion crystals.
References
- [1] Y. Shiomi, K. Nomura, Y. Kajiwara, K. Eto, M. Novak, K. Segawa, Y. Ando, and E. Saitoh, Spin-electricity conversion induced by spin injection into topological insulators, Phys. Rev. Lett. 113, 196601 (2014).
- [2] D. Hirobe, Y. Shiomi, Y. Shimada, J. Ohe, and E. Saitoh, Generation of spin currents in the skyrmion phase of a helimagnetic insulator Cu2OSeO3, J. Appl. Phys. 117, 053904 (2015).
