Local X-ray magnetic circular dichroism study of Fe/Cu(111) using a tunneling smart tip

Localized spectroscopy with simultaneous topographic, elemental and magnetic information is presented. A synchrotron X-ray scanning tunneling microscope has been employed for the local study of the X-ray magnetic circular dichroism at the Fe L (2,3)-edges of a thin iron film grown on Cu(111). Polari...

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Detalles Bibliográficos
Autores principales: DiLullo, Andrew, Shirato, Nozomi, Cummings, Marvin, Kersell, Heath, Chang, Hao, Rosenmann, Daniel, Miller, Dean, Freeland, John W., Hla, Saw-Wai, Rose, Volker
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2016
Materias:
Research Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4768769/
https://www.ncbi.nlm.nih.gov/pubmed/26917146
http://dx.doi.org/10.1107/S1600577515023383
Descripción
Sumario:Localized spectroscopy with simultaneous topographic, elemental and magnetic information is presented. A synchrotron X-ray scanning tunneling microscope has been employed for the local study of the X-ray magnetic circular dichroism at the Fe L (2,3)-edges of a thin iron film grown on Cu(111). Polarization-dependent X-ray absorption spectra have been obtained through a tunneling smart tip that serves as a photoelectron detector. In contrast to conventional spin-polarized scanning tunneling microscopy, X-ray excitations provide magnetic contrast even with a non-magnetic tip. Intensity variations in the photoexcited tip current point to chemical variations within a single magnetic Fe domain.

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