Ultrafast dynamics of four-state magnetization reversal in (Ga,Mn)As

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	Ultrafast dynamics of four-state magnetization reversal in (Ga,Mn)As
	Zhang XH
刊名	applied physics letters
	2009
卷号	95 期号:5 页码:art. no. 052108
关键词	gallium arsenide high-speed optical techniques III-V semiconductors Kerr magneto-optical effect magnetic domain walls magnetic switching magnetic thin films magnetisation reversal manganese compounds nucleation optical pumping semiconductor thin films semimagnetic semiconductors
ISSN号	0003-6951
通讯作者	zhang xh chinese acad sci inst semicond state key lab superlattices & microstruct pob 912 beijing 100083 peoples r china. e-mail address: xinhuiz@semi.ac.cn
中文摘要	the ultrafast dynamics of in-plane four-state magnetization reversal from compressively strained (ga,mn)as film was investigated by magneto-optical kerr rotation measurement. the magnetization reversal signal was dramatically suppressed upon pumping, and recovered slowly with time evolution. the low switching field h-c1 increased abruptly from 30 to 108 g on the first several picoseconds and recovered back to the value before optical pumping within about 500 ps, whereas the high switching field h-c2 did not change obviously upon pumping, implying a domain-wall nucleation/propagation at low fields and coherent magnetization rotation at high fields in the magnetization reversal process.
学科主题	半导体物理
收录类别	SCI
资助信息	national natural science foundation of china 10674131 60836002national key projects for basic research of china 2007cb924904 knowledge innovation project of chinese academy of sciences kjcx2. yw.w09 this work is supported by the national natural science foundation of china (grant nos. 10674131 and 60836002) the national key projects for basic research of china under grant no. 2007cb924904 and the knowledge innovation project of chinese academy of sciences (grant no. kjcx2. yw.w09)
语种	英语
公开日期	2010-03-08
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/7037]
专题	半导体研究所_中国科学院半导体研究所（2009年前）
推荐引用方式 GB/T 7714	Zhang XH. Ultrafast dynamics of four-state magnetization reversal in (Ga,Mn)As[J]. applied physics letters,2009,95(5):art. no. 052108.
APA	Zhang XH.(2009).Ultrafast dynamics of four-state magnetization reversal in (Ga,Mn)As.applied physics letters,95(5),art. no. 052108.
MLA	Zhang XH."Ultrafast dynamics of four-state magnetization reversal in (Ga,Mn)As".applied physics letters 95.5(2009):art. no. 052108.