Work

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

Year: 2015

Type: article

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.

Source: Optics Express

DOI: 10.1364/oe.23.013530

Authors: Sicong Wang, Xiangping Li, Jianying Zhou, Min Gu

Institutions: Sun Yat-sen University, Swinburne University of Technology

Language: English

Topic: Magnetic properties of thin films

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funders: Australian Research Council, National Key Research and Development Program of China