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Title: Electric field control for energy efficient domain wall injection
Authors: Tan, Funan
Wong, Qi Ying
Gan, Weiliang
Li, Sihua
Liu, Hong Xi
Poh, Francis
Lew, Wen Siang
Keywords: Science::Physics
Issue Date: 2019
Source: Tan, F., Wong, Q. Y., Gan, W., Li, S., Liu, H. X., Poh, F. & Lew, W. S. (2019). Electric field control for energy efficient domain wall injection. Journal of Magnetism and Magnetic Materials, 485, 174-179.
Project: NRF-CRP9-2011-01
No. I1801E0030
No. A1687b0033
Journal: Journal of Magnetism and Magnetic Materials
Abstract: Domain wall injection by electric means is an energy exhausting process. This process is conventionally carried out by sending a current pulse through a stripline which generates an Oersted field to locally switch the magnetization in a magnetic wire. In this work, the magnetic properties of the device were modulated by electric control to lower the required current density for DW injection. The proposed DW injection device employs a Hall cross structure which simplifies the device fabrication process and allows a larger Oersted field to be generated at the domain wall injection region. Electrical pulses of 50 ns were sent through the Hall bar to inject domain walls. The formation of the resulting domain walls was detected electrically using the Hall resistance and optically by Kerr microscopy. The results show that the required current density for injection of domain walls is reduced by ∼20% with an applied electric field of +250 MV/m on the Hall cross structure.
ISSN: 0304-8853
DOI: 10.1016/j.jmmm.2019.04.069
Rights: © 2019 Elsevier B.V. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SPMS Journal Articles

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