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Magnetic Circular D...
Magnetic Circular Dichroism in Two-Photon Photoemission
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Hild, K. (author)
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Maul, J. (author)
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Schoenhense, G. (author)
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Elmers, H. J. (author)
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- Amft, Martin (author)
- Uppsala universitet,Institutionen för fysik och materialvetenskap
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- Oppeneer, Peter M. (author)
- Uppsala universitet,Institutionen för fysik och materialvetenskap
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(creator_code:org_t)
- 2009
- 2009
- English.
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In: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 102:5, s. 057207-
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- We report the observation of magnetic circular dichroism (MCD) in two-photon photoemission (2PPE). The Heusler alloys Ni2MnGa and Co2FeSi were investigated by excitation with femtosecond laser light, showing MCD asymmetries of A = (3.5 +/- 0.5) x 10(-3) for Ni2MnGa and of A = (2.1 +/- 1.0) x 10(-3) for Co2FeSi, respectively. A theoretical explanation is provided based on local spin-density calculations for the magnetic dichroic response; the computed 2PPE MCD agrees well with the experiment. The observed 2PPE magnetic contrast represents an interesting alternative for future time-resolved photoemission studies on surface magnetism practicable in the laboratory.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Physics
- Fysik
Publication and Content Type
- ref (subject category)
- art (subject category)
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