Reversible Electric-Field-Driven Magnetic Domain-Wall Motion

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© 2015 American Physical Society (APS). This is the accepted version of the following article: Franke, Kevin J. A. & Van de Wiele, Ben & Shirahata, Yasuhiro & Hämäläinen, Sampo J. & Taniyama, Tomoyasu & van Dijken, Sebastiaan. 2015. Reversible Electric-Field-Driven Magnetic Domain-Wall Motion. Physical Review X. Volume 5, Issue 1. 011010/1-9. ISSN 2160-3308 (printed). DOI: 10.1103/physrevx.5.011010, which has been published in final form at http://journals.aps.org/prx/abstract/10.1103/PhysRevX.5.011010.
Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2015
Major/Subject
Mcode
Degree programme
Language
en
Pages
011010/1-9
Series
Physical Review X, Volume 5, Issue 1
Abstract
Control of magnetic domain-wall motion by electric fields has recently attracted scientific attention because of its potential for magnetic logic and memory devices. Here, we report on a new driving mechanism that allows for magnetic domain-wall motion in an applied electric field without the concurrent use of a magnetic field or spin-polarized electric current. The mechanism is based on elastic coupling between magnetic and ferroelectric domain walls in multiferroic heterostructures. Pure electric-field-driven magnetic domain-wall motion is demonstrated for epitaxial Fe films on BaTiO3 with in-plane and out-of-plane polarized domains. In this system, magnetic domain-wall motion is fully reversible and the velocity of the walls varies exponentially as a function of out-of-plane electric-field strength.
Description
Keywords
magnetic domain-wall motion, electric fields, elastic coupling
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Citation
Franke, Kevin J. A. & Van de Wiele, Ben & Shirahata, Yasuhiro & Hämäläinen, Sampo J. & Taniyama, Tomoyasu & van Dijken, Sebastiaan. 2015. Reversible Electric-Field-Driven Magnetic Domain-Wall Motion. Physical Review X. Volume 5, Issue 1. 011010/1-9. ISSN 2160-3308 (printed). DOI: 10.1103/physrevx.5.011010