Modification of Dzyaloshinskii-Moriya-Interaction-Stabilized Domain Wall Chirality by Driving Currents.

Karnad, G V; Freimuth, F; Martinez, E; Lo Conte, R; Gubbiotti, G; Schulz, T; Senz, S; Ocker, B; Mokrousov, Y; Kläui, M

Karnad, G V; Freimuth, F; Martinez, E; Lo Conte, R; Gubbiotti, G; Schulz, T; Senz, S; Ocker, B; Mokrousov, Y; Kläui, M.

Afiliación

Karnad GV; Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, 55128 Mainz, Germany.
Freimuth F; Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, 52425 Jülich, Germany.
Martinez E; Departamento Fisica Aplicada, Facultad de Ciencias, University of Salamanca, 37008 Salamanca, Spain.
Lo Conte R; Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, 55128 Mainz, Germany.
Gubbiotti G; Graduate School of Excellence "Materials Science in Mainz" (MAINZ), Staudinger Weg 9, 55128 Mainz, Germany.
Schulz T; Istituto Officina dei Materiali del CNR (CNR-IOM), Sede Secondaria di Perugia, c/o Dipartimento di Fisica e Geologia, Universitá di Perugia, I-06123 Perugia, Italy.
Senz S; Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, 55128 Mainz, Germany.
Ocker B; Max-Planck-Institut für Mikrostrukturphysik, 06120 Halle(Saale), Germany.
Mokrousov Y; Singulus Technology AG, 63796 Kahl am Main, Germany.
Kläui M; Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, 55128 Mainz, Germany.

Phys Rev Lett ; 121(14): 147203, 2018 Oct 05.

Article en En | MEDLINE | ID: mdl-30339435

RESUMEN

We measure and analyze the chirality of Dzyaloshinskii-Moriya-interaction (DMI) stabilized spin textures in multilayers of Ta|Co_{20}F_{60}B_{20}|MgO. The effective DMI is measured experimentally using domain wall motion measurements, both in the presence (using spin-orbit torques) and absence of driving currents (using magnetic fields). We observe that the current-induced domain wall motion yields a change in effective DMI magnitude and opposite domain wall chirality when compared to field-induced domain wall motion (without current). We explore this effect, which we refer to as current-induced DMI, by providing possible explanations for its emergence, and explore the possibility of its manifestation in the framework of recent theoretical predictions of DMI modifications due to spin currents.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2018 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Estados Unidos

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