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Asymmetric magnetic NOT gate and shift registers for high density data storage

Zeng, Huang T., Read, Daniel ORCID: https://orcid.org/0000-0002-4178-4986, O'Brien, L., Sampaio, J., Lewis, E. R., Petit, D. and Cowburn, Russell P. 2010. Asymmetric magnetic NOT gate and shift registers for high density data storage. Applied Physics Letters 96 (26) , pp. 262510-262513. 10.1063/1.3457998

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Abstract

We have developed an asymmetric ferromagnetic NOT gate and shift register optimized on a square grid. This gives rise to a two-dimensional storage scheme built up by tessellating an elementary data unit, which is scalable down to very narrow wire widths. The areal footprint of each storage unit is 15F2, where F is the minimum feature size. We experimentally demonstrate NOT operations across a chain of three gates made from Permalloy with F = 60 nm, and present a functional 15-gate, multichannel shift register with electrical injection, and optical readout.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Uncontrolled Keywords: ferromagnetic materials, logic gates, Permalloy, readout electronics, shift registers
Publisher: American Institute of Physics
ISSN: 0003-6951
Last Modified: 18 Oct 2022 14:24
URI: https://orca.cardiff.ac.uk/id/eprint/17405

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