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아래와 같이 콜로퀴움을 개최하오니 많이 참석해 주시기 바랍니다. 4시 20분부터 제1과학관 31214 e+강의실 앞에서 다과를 준비하오니 많은 참석 부탁드립니다 아 래 제목: Electric control of magnetic nanostructures via spin torque 연사:이 현 우 교수 (포항공대) 일시: 2010년 10월 15(금) 오후4:30 장소: e+첨단강의실 (31214호실) 초록: Spin is a genuine quantum degree of freedom that does not have classical correspondence. In ferromagnets, the spin-spin exchange interaction can have sizable magnitude (~ eV) and thus magnetic ordering can be in principle manipulated by using this exchange interaction. For instance, when spin-polarized currents are injected into ferromagnets and if the spin polarization direction of the currents differs from the magnetization direction of the ferromagnet, the exchange interaction induces magnetization dynamics. Spin transfer torque refers to torque that acts on ferromagnets due to the injected spin-polarized currents. In this talk, I will review basic concept of the spin transfer torque and also recent efforts to utilize this for device applications, including my own works [1,2,3]. [1] K.-J. Kim et al., Nature 458, 740 (2009). [2] S.-C. Oh et al., Nature Physics 5, 898 (2009) [3] J.-C. Lee et al., submitted to Nature Commnunications
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