Magnetic domain-wall motion twisted by nanoscale probe-induced spin transfer

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	Magnetic domain-wall motion twisted by nanoscale probe-induced spin transfer
	Wang, J ; Xie, LS ; Wang, CS ; Zhang, HZ ; Shu, L ; Bai, J ; Chai, YS ; Zhao, X ; Nie, JC ; Cao, CB ; Gu, CZ ; Xiong, CM ; Sun, Y ; Shi, J ; Salahuddin, S ; Xia, K ; Nan, CW ; Zhang, JX
刊名	PHYSICAL REVIEW B
	2014
卷号	90 期号:22
ISSN号	1098-0121
通讯作者	Wang, J (reprint author), Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China.
中文摘要	A method for deterministic control of magnetism using an electrical stimulus is highly desired for the new generation of magnetoelectronic devices. Much effort has been focused on magnetic domain-wall (DW) motion manipulated by a successive injection of spin-polarized current into a magnetic nanostructure. However, an integrant high-threshold current density of 10(11) similar to 10(12) A/m(2) inhibits the integration with low-energy-cost technology. Here, we report an approach to manipulate a single magnetic domain wall with a perpendicular anisotropy in a manganite/dielectric/metal capacitor using a probe-induced spin displacement. A spin-transfer torque (STT) occurs in the strongly correlated manganite film during the spin injection into the capacitor from the nanoscale magnetized tip with an ultralow voltage of 0.1 V, where a lower bound of the estimated threshold spin-polarized current density is similar to 10(8) A/m(2) at the tip/manganite interface. The dynamic of DW motions are analyzed using the Landau-Lifshitz-Gilbert method. This probe-voltage-controlled DW motion, at an ambient condition, demonstrates a critical framework for the fundamental understanding of the manipulation of the nanomagnet systems with low-energy consumption.
资助信息	National Science Foundation of China [51322207, 51332001, 11274045]; National Basic Research Program of China [2014CB920902]; National Natural Science Foundation of China [11474024, 11474022]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59491]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Wang, J,Xie, LS,Wang, CS,et al. Magnetic domain-wall motion twisted by nanoscale probe-induced spin transfer[J]. PHYSICAL REVIEW B,2014,90(22).
APA	Wang, J.,Xie, LS.,Wang, CS.,Zhang, HZ.,Shu, L.,...&Zhang, JX.(2014).Magnetic domain-wall motion twisted by nanoscale probe-induced spin transfer.PHYSICAL REVIEW B,90(22).
MLA	Wang, J,et al."Magnetic domain-wall motion twisted by nanoscale probe-induced spin transfer".PHYSICAL REVIEW B 90.22(2014).