Quantum well states in Au/Ru(0001) and their effect on the magnetic properties of a Co overlayer

Title
Quantum well states in Au/Ru(0001) and their effect on the magnetic properties of a Co overlayer
Authors
최준우Jie WuFarid El Gabaly
Keywords
Quantum Well States; Magnetic Thin Films
Issue Date
2009-04
Publisher
New journal of physics
Citation
VOL 11, NO 4, 043016-1-043016-11
Abstract
The magnetic properties of Co/Au/Ru(0001) as a function of thickness-dependent quantum well states (QWS) in the Au spacer layer were investigated using spin-polarized low energy electron microscopy. Au grown epitaxially on Ru(0001) at room temperature was annealed at ~300 ℃. Upon annealing, Au forms micron-sized islands across stepped regions of Ru, forming local wedges of different Au thicknesses. Energy scans clearly reveal the existence of QWS in Au/Ru(0001). After depositing Co films on top of the Au, we found that the Curie temperature (Tc) and the spin reorientation transition (SRT) of the Co film on the Au islands are different from those of the Co film on the Au wetting layer. However, the QWS of the Au layer have no effect on the Tc and the SRT of the Co film.
URI
http://pubs.kist.re.kr/handle/201004/38714
ISSN
1367-2630
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