Tuning the Ferromagnetic Coupling of Fe Nanodots on Cu(111) via Dimensionality Variation of the Mediating Electrons

CORC > 物理研究所 > 物理所公开发表论文 > 期刊论文

	Tuning the Ferromagnetic Coupling of Fe Nanodots on Cu(111) via Dimensionality Variation of the Mediating Electrons
	Yin, LF ; Xiao, D ; Gai, Z ; Ward, TZ ; Widjaja, N ; Stocks, GM ; Cheng, ZH ; Plummer, EW ; Zhang, ZY ; Shen, J
刊名	PHYSICAL REVIEW LETTERS
	2010
卷号	104 期号:16
关键词	LAYER-ASSISTED GROWTH SURFACE METALS CONFINEMENT IMPURITIES
ISSN号	0031-9007
通讯作者	Shen, J (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
中文摘要	Using in situ magneto-optical Kerr effect measurements and phenomenological modeling, we study the tunability in both the magnetization anisotropy and magnetic coupling of Fe nanodots on a curved Cu(111) substrate with varying vicinity. We observe that, as the terrace width w decreases, the magnetization anisotropy increases monotonically, faster when w is smaller than the nanodot size d. In contrast, the magnetic coupling strength also increases until w similar to d, after which it decreases steeply. These striking observations can be rationalized by invoking the counterintuitive dimensionality variation of the surface electrons mediating the interdot coupling: the electrons are confined to be one dimensional (1D) when w >= d, but become quasi-2D when w < d due to enhanced electron spillover across the steps bridged by the nanodots.
收录类别	SCI
资助信息	U.S. DOE (Division of Materials Sciences and Engineering, Office of Basic Energy Sciences); CMSN; U.S. NSF [DMR-0906025]
语种	英语
公开日期	2013-09-23
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/46193]
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	Yin, LF,Xiao, D,Gai, Z,et al. Tuning the Ferromagnetic Coupling of Fe Nanodots on Cu(111) via Dimensionality Variation of the Mediating Electrons[J]. PHYSICAL REVIEW LETTERS,2010,104(16).
APA	Yin, LF.,Xiao, D.,Gai, Z.,Ward, TZ.,Widjaja, N.,...&Shen, J.(2010).Tuning the Ferromagnetic Coupling of Fe Nanodots on Cu(111) via Dimensionality Variation of the Mediating Electrons.PHYSICAL REVIEW LETTERS,104(16).
MLA	Yin, LF,et al."Tuning the Ferromagnetic Coupling of Fe Nanodots on Cu(111) via Dimensionality Variation of the Mediating Electrons".PHYSICAL REVIEW LETTERS 104.16(2010).