Controlled spin-torque driven domain wall motion using staggered magnetic wires
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ArticleKAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionElectrical Engineering Program
King Abdullah University of Science and Technology, Computer Electrical and Mathematical Science and Engineering, Thuwal 23955-6900, Saudi Arabia
Sensing, Magnetism and Microsystems Lab
Date
2020-01-22Online Publication Date
2020-01-22Print Publication Date
2020-01-21Embargo End Date
2021-01-22Submitted Date
2019-11-09Permanent link to this record
http://hdl.handle.net/10754/661357
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Show full item recordAbstract
Domain wall (DW) memory devices such as racetrack memory offer an alternative to the hard disk drive in achieving high capacity storage. In DW memory, the control of domain wall positions and their motion using spin-transfer torque is an important challenge. In this Letter, we demonstrate controlled domain wall motion using spin-transfer torque in staggered wires. The devices, fabricated using electron-beam and laser lithography, were tested using magneto-optical Kerr microscopy and electrical transport measurements. The depinning current is found to depend on the device dimensions of the staggering wires. Thus, the proposed staggering configuration can be utilized to fine-tune the properties of DW devices for memory applications.Citation
Mohammed, H., Risi, S. A., Jin, T. L., Kosel, J., Piramanayagam, S. N., & Sbiaa, R. (2020). Controlled spin-torque driven domain wall motion using staggered magnetic wires. Applied Physics Letters, 116(3), 032402. doi:10.1063/1.5135613Sponsors
The authors would like to thank S. Al Harthi and M. T. Zar Myint from Sultan Qaboos University for their support and assistance in the magnetometry measurements. S.N.P. acknowledges the partial support from the grant of National Research Foundation, Singapore (NRF2015-IIP003-001).Publisher
AIP PublishingJournal
Applied Physics LettersarXiv
1908.09304ae974a485f413a2113503eed53cd6c53
10.1063/1.5135613