All-optically configuring the inverse Faraday effect for nanoscale perpendicular magnetic recording

Wang, S, Li, X, Zhou, J and Gu, M 2015, 'All-optically configuring the inverse Faraday effect for nanoscale perpendicular magnetic recording', Optics Express, vol. 23, no. 10, pp. 13530-13536.


Document type: Journal Article
Collection: Journal Articles

Title All-optically configuring the inverse Faraday effect for nanoscale perpendicular magnetic recording
Author(s) Wang, S
Li, X
Zhou, J
Gu, M
Year 2015
Journal name Optics Express
Volume number 23
Issue number 10
Start page 13530
End page 13536
Total pages 7
Publisher Optical Society of America
Abstract Nanoscale reversal of the longitudinal magnetization (Mz) is highly desired in the ultrahigh density perpendicular magnetic recording. In this paper, an all-optical method to realize the reversal of Mz with an ultrasmall lateral size through configuring the inverse Faraday effect (IFE) is numerically proposed. This feature is achieved by optical coherent configuration of the IFE in the central and peripheral regions of the focal spot with opposite signs. By increasing the intensity of the peripheral regions to produce destructive interference, the lateral size of the reversed Mz smaller than 30 nm in one dimension in the central region can be achieved. This result is of vital importance for realizing ultrafast nanoscale perpendicular magnetic recording.
Subject Biomedical Engineering not elsewhere classified
Keyword(s) Faraday effect
Inverse problems
Magnetic recording
Magnetism
Magnetization reversal
Nanotechnology Coherent configurations
Destructive interference
Inverse Faraday effects
Longitudinal magnetization
One dimension
Peripheral regions
Perpendicular magnetic recording
Ultrahigh density
DOI - identifier 10.1364/OE.23.013530
Copyright notice © 2015 Optical Society of America.
ISSN 1094-4087
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