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Distance- and spin-resolved spectroscopy of iridium atoms on an iron bilayer
University of Kiel, Germany.
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, Faculty of Science & Engineering. University of Kiel, Germany.
University of Kiel, Germany.
University of Kiel, Germany.
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2016 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 94, no 11, 115418- p.Article in journal (Refereed) Published
Abstract [en]

The induced spin polarization of Ir atoms on a ferromagnetic Fe double layer on W(110) has been investigated with spin-polarized scanning tunneling microscopy. An unoccupied state is observed with a spin polarization exceeding 60% that is inverted with respect to the Fe layer. This inversion is due to the tunneling gap acting as an orbital and spin filter. Distance dependent measurements show that the spin polarization remains approximately constant over the entire experimentally accessible range, from far in the tunneling regime to 1 angstrom from the point of contact formation. This is corroborated by density functional theory calculations which show that the inversion of spin polarization occurs within 0.5 angstrom of the adatom.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2016. Vol. 94, no 11, 115418- p.
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Condensed Matter Physics
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URN: urn:nbn:se:liu:diva-131883DOI: 10.1103/PhysRevB.94.115418ISI: 000383143200006OAI: oai:DiVA.org:liu-131883DiVA: diva2:1034924
Note

Funding Agencies|Deutsche Forschungsgemeinschaft [SFB 677]; [SFB 668]

Available from: 2016-10-13 Created: 2016-10-11 Last updated: 2016-11-07

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Caffrey, Nuala Mai
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Theoretical PhysicsFaculty of Science & Engineering
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