Open AccessLocal X‐ray magnetic circular dichroism study of Fe/Cu(111) using a tunneling smart tip
Author(s) -
DiLullo Andrew,
Shirato Nozomi,
Cummings Marvin,
Kersell Heath,
Chang Hao,
Rosenmann Daniel,
Miller Dean,
Freeland John W.,
Hla Saw-Wai,
Rose Volker
Publication year - 2016
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577515023383
Subject(s) - magnetic circular dichroism , scanning tunneling microscope , x ray magnetic circular dichroism , spin polarized scanning tunneling microscopy , x ray photoelectron spectroscopy , linear dichroism , materials science , electrochemical scanning tunneling microscope , synchrotron radiation , scanning tunneling spectroscopy , magnetic force microscope , dichroism , chemistry , nuclear magnetic resonance , optics , spectral line , circular dichroism , magnetization , crystallography , physics , magnetic field , nanotechnology , astronomy , quantum mechanics
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.