@article{120c650a9b9144aba54dabc19cc63048,
title = "Electric-field-induced changes of magnetic moments and magnetocrystalline anisotropy in ultrathin cobalt films",
abstract = "In this study, the microscopic origins of the voltage-controlled magnetic anisotropy (VCMA) in 3d-ferromagnetic metals are revealed. Using in situ x-ray fluorescence spectroscopy that provides a high quantum efficiency, electric-field-induced changes in orbital magnetic moment and magnetic dipole Tz terms in ultrathin Co films are demonstrated. An orbital magnetic moment difference of 0.013μB was generated in the presence of electric fields of ±0.2V/nm. The VCMA of Co was properly estimated by the induced change in orbital magnetic moment, according to the perturbation theory model. The induced change in the magnetic dipole Tz term only slightly contributed to the VCMA in 3d-ferromagnetic metals.",
author = "Takeshi Kawabe and Kohei Yoshikawa and Masahito Tsujikawa and Takuya Tsukahara and Kohei Nawaoka and Yoshinori Kotani and Kentaro Toyoki and Minori Goto and Motohiro Suzuki and Tetsuya Nakamura and Masafumi Shirai and Yoshishige Suzuki and Shinji Miwa",
note = "Funding Information: We thank E. Tamura of Osaka University, T. Nozaki of AIST, and Y. Shiota of Kyoto University for their discussions. This work received support from the ImPACT Program of the Council for Science, Technology and Innovation (Cabinet Office, Government of Japan), and from JSPS KAKENHI (Grants No. JP26103002 and No. JP15H05420). The XAS and XMCD measurements were performed in SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (Proposals No. 2015A0079, No. 2016B1016, No. 2017A1012, No. 2017A1201, and No. 2017A1869). Publisher Copyright: {\textcopyright} 2017 American Physical Society.",
year = "2017",
month = dec,
day = "26",
doi = "10.1103/PhysRevB.96.220412",
language = "English",
volume = "96",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "22",
}