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Electronic structure of Fe and Co magnetic adatoms on Bi2Te3 surfaces

Abstract:

Magnetic doping of topological insulators (TIs) is a prerequisite for their application as spin-based devices. Using x-ray magnetic circular dichroism (XMCD) we investigate the influence of an ultralow coverage (∼0.5% of a monolayer) of magnetic atoms on a TI substrate. For Fe and Co adatoms on Bi 2Te 3 at ∼1.5 K we find an orbital-to-spin magnetic moment ratio of ∼0.45. The magnetization curve of the Fe atoms recorded by XMCD is in quantitative agreement with a paramagnetic behavior with no ...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevB.86.081304

Authors


Shelford, LR More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Condensed Matter Physics
Collins-McIntyre, L More by this author
Maccherozzi, F More by this author
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Journal:
PHYSICAL REVIEW B
Volume:
86
Issue:
8
Publication date:
2012-08-14
DOI:
EISSN:
1550-235X
ISSN:
1098-0121
URN:
uuid:f1b4fd3d-e496-402b-a572-7b17f674efdc
Source identifiers:
350063
Local pid:
pubs:350063
Language:
English

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