Misfit-induced modification of structure and magnetism in O/Fe(001)-p(1×1)

The geometry of oxygen atoms in hollow sites of Fe nanoislands (⊘≈1-2  nm) on Fe(001) is modified by mesoscopic misfit-induced relaxations of the island atoms. Surface x-ray diffraction, scanning tunneling microscopy, and ab initio calculations indicate a 0.3 Å increased adsorption height [0.7 Å ver...

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Bibliographic Details
Published in:Physical review letters 2013-06, Vol.110 (23), p.235503-235503, Article 235503
Main Authors: Feng, W, Meyerheim, H L, Mohseni, K, Brovko, O, Stepanyuk, V S, Jedrecy, N, Felici, R, Kirschner, J
Format: Article
Language:English
Subjects:
Condensed Matter
Physics
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Summary:The geometry of oxygen atoms in hollow sites of Fe nanoislands (⊘≈1-2  nm) on Fe(001) is modified by mesoscopic misfit-induced relaxations of the island atoms. Surface x-ray diffraction, scanning tunneling microscopy, and ab initio calculations indicate a 0.3 Å increased adsorption height [0.7 Å versus 0.4 Å in O/Fe(001)-p(1×1)] of O atoms going in parallel with a reduced Fe-Fe layer spacing inducing a reduction of the surface magnetic moment (2.85μ(B) versus 3.2μ(B)). Our results demonstrate the importance of the mesoscopic misfit for surface physical properties in general.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.110.235503