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	Steps on Fe3O4(100): STM measurements and theoretical calculations
	Wang, HQ ; Altman, EI ; Henrich, VE ; Wang HQ(王惠琼)
	2006
关键词	MOLECULAR-BEAM EPITAXY SCANNING-TUNNELING-MICROSCOPY MBE-GROWN FE3O4(001) SURFACE-STRUCTURE THIN-FILMS LEED CRYSTALLOGRAPHY VICINAL SI(001) MAGNETITE RECONSTRUCTION GAMMA-FE2O3
英文摘要	Scanning tunneling microscopy (STM) measurements of the step structure on natural single-crystal samples of Fe3O4(100) have been performed. Step edges are found to occur along both [110] and [1 (1) over bar0] directions. For step heights of 4.2 +/- 0.3 angstrom, the step edges are found to be straight, whereas for step heights of 2.1 +/- 0.2 angstrom, alternate step edges are straight and jagged. The straight (jagged) step edges are parallel (perpendicular) to the octahedral iron rows on the upper terrace. The concepts of coordinative unsaturation and excess surface charge are used to predict which atomic geometries are likely to be most stable along step edges. Our calculations show that steps parallel to the octahedral iron rows on the upper terrace are expected to be more stable than those perpendicular to them, in agreement with our STM observations. This step stability is found to be independent of both terrace structure and step height.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/69685]
专题	物理技术－已发表论文
推荐引用方式 GB/T 7714	Wang, HQ,Altman, EI,Henrich, VE,et al. Steps on Fe3O4(100): STM measurements and theoretical calculations[J],2006.
APA	Wang, HQ,Altman, EI,Henrich, VE,&王惠琼.(2006).Steps on Fe3O4(100): STM measurements and theoretical calculations..
MLA	Wang, HQ,et al."Steps on Fe3O4(100): STM measurements and theoretical calculations".(2006).

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