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  Magnetic dichroism in angular resolved hard X-ray photoelectron spectroscopy from buried magnetic layers

ViolBarbosa, C. E., Ouardi, S., Fecher, G. H., Ebke, D., & Felser, C. (2013). Magnetic dichroism in angular resolved hard X-ray photoelectron spectroscopy from buried magnetic layers. Journal of Electron Spectroscopy and Related Phenomena, 189, 146-151. doi:10.1016/j.elspec.2013.01.008.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-7935-4 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-F7FF-9
Genre: Journal Article

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ViolBarbosa, Carlos E.1, Author              
Ouardi, Siham2, Author              
Fecher, Gerhard H.3, Author              
Ebke, Daniel4, Author              
Felser, Claudia5, Author              
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2Siham Ouardi, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863439              
3Gerhard Fecher, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863431              
4Daniel Ebke, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863430              
5Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: This work reports on the measurement of magnetic dichroism in angular-resolved photoelectron spectroscopy from in-plane magnetized buried thin films. The high bulk sensitivity of hard X-ray photoelectron spectroscopy (HAXPES) in combination with circularly polarized radiation enables the investigation of the magnetic properties of buried layers. Angular distributions of high kinetic energy (7-8 key) photoelectrons in a range of about 600 were recorded in parallel to the energy distribution. Depending on purpose, energy and angular resolutions of 150-250 meV and 0.17-2 degrees can be accomplished simultaneously in such experiments. Experiments were performed on exchange-biased magnetic layers covered by thin oxide films. More specifically, the angular distribution of photoelectrons from the ferromagnetic layer Co2FeAl layer grown on MnIr exchange-biasing layer was investigated where the magnetic structure is buried beneath a MgO layer. Pronounced magnetic dichroism is found in the Co and Fe 2p states for all angles of emission. A slightly increased magnetic dichroism was observed for normal emission in agreement with theoretical considerations. (C) 2013 Elsevier B.V. All rights reserved.

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 Dates: 2013-02-162013-02-16
 Publication Status: Published in print
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Title: Journal of Electron Spectroscopy and Related Phenomena
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 189 Sequence Number: - Start / End Page: 146 - 151 Identifier: ISSN: 0368-2048
CoNE: /journals/resource/954925524767