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Authors: Martin, Franziska
Lee, Kyujoon
Kronenberg, Alexander
Jaiswal, Samridh
Reeve, Robert M.
Filianina, Mariia
Ji, Sanghyun
Jung, Myung-Hwa
Jakob, Gerhard
Kläui, Mathias
Title: Current induced chiral domain wall motion in CuIr/CoFeB/MgO thin films with strong higher order spin-orbit torques
Online publication date: 1-Jul-2020
Language: english
Abstract: We investigate the Dzyaloshinskii-Moriya interaction (DMI) and spin-orbit torque effects in cuir/cofeb/mgo heterostructures. to this end, harmonic hall measurements and current induced domain wall motion experiments are performed. the motion of domain walls at zero applied field due to current demonstrates the presence of dmi in this system. we determine the strength of the dmi to be d= 5 /- 3 mu j/m2 and deduce right-handed chirality in domain walls showing a partial neel type spin structure. to ascertain the torques, we perform a second harmonic measurement to quantify the damping- and field-like current induced effective fields as a function of the magnetization direction. from the angular dependent analysis, we identify non-negligible higher order terms for polar magnetization angles theta>0, which need to be included when considering the effective manipulation of spins by current.
DDC: 530 Physik
530 Physics
Institution: Johannes Gutenberg-Universität Mainz
Department: FB 08 Physik, Mathematik u. Informatik
Place: Mainz
URN: urn:nbn:de:hebis:77-publ-598949
Version: Accepted version
Publication type: Zeitschriftenaufsatz
License: in Copyright
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Journal: Applied physics letters
Pages or article number: Art. 132410
Publisher: American Inst. of Physics
Publisher place: Melville, NY
Issue date: 2020
ISSN: 1077-3118
Publisher URL:
Publisher DOI: 10.1063/1.5139704
Appears in collections:JGU-Publikationen

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