@article{11d2363dd54d4cc39c9896a3da535bcf,
title = "Reversible change in the oxidation state and magnetic circular dichroism of Fe driven by an electric field at the FeCo/MgO interface",
abstract = "The influence of an electric field on an ultrathin FeCo film was investigated by x-ray absorption spectroscopy and magnetic circular dichroism. Measurements were done on sub-millimeter sized pillars, with partial fluorescence yield detection. Fe L2,3 absorption spectra revealed that partial oxidation of Fe occurred during the microfabrication. The oxidation state could be reversibly controlled by an electric field, which also induced variations of the dichroic signal. These results show that electrochemical phenomena may influence the magnetism at a ferromagnet/insulator interface.",
author = "F. Bonell and Takahashi, {Y. T.} and Lam, {D. D.} and S. Yoshida and Y. Shiota and S. Miwa and T. Nakamura and Y. Suzuki",
note = "Funding Information: We gratefully thank Y. Tamenori for supplying the SDD and T. Hirono for help in the measurements. Y.S. was supported by a Grant-in-Aid for JSPS Fellows. The XAS and MCD measurements were performed in SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (Proposal Nos. 2011A1319, 2011B1720, and 2012A1671).",
year = "2013",
month = apr,
day = "15",
doi = "10.1063/1.4802030",
language = "English",
volume = "102",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics",
number = "15",
}