Journal Article

PreJuSER-11193

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Island-assisted interface alloying and magnetic polarization at submonolayer V/Cr(001) interfaces

Clavero, C. ; Bode, M. ; Bihlmayer, G.FZJ* ; Blügel, S.FZJ* ; Lukaszew, R. A.

2010
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/10975  doi:10.1103/PhysRevB.82.085445

Abstract: Island-assisted interface alloying was observed during submonolayer deposition on Cr(001) substrates at 525 K. Scanning tunneling spectroscopy suggests atomic interchange at the center of the islands during the early stages of growth, giving rise to a Cr core in the center of the island and a gradually increasing V concentration toward the island rim. The existence of a VCr alloy with equiatomic composition is concluded by comparing tunneling spectra measured at the island rim with density-functional theory calculations. Coalescence of the initial islands gives rise to inhomogeneous alloying at monolayer coverage. Antiferromagnetic coupling between the islands and the Cr(001) substrate is found for coverages up to 0.50 atomic layers. At higher coverages, no magnetic contrast was observed.

Keyword(s): J

Note: This work was partially supported by NSF-DMR under Grant No. 0605661, and the Research Corporation. Use of the Center for Nanoscale Materials at Argonne National Laboratory was supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IFF-1)
2. Quanten-Theorie der Materialien (IAS-1)
3. Jülich-Aachen Research Alliance - Fundamentals of Future Information Technology (JARA-FIT)
4. Jülich Aachen Research Alliance - High-Performance Computing (JARA-HPC)

Research Program(s):

1. Grundlagen für zukünftige Informationstechnologien (P42)

Appears in the scientific report 2010

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