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

Zeng, Huang T., Read, Daniel, 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:	04 Jun 2017 03:09
URI:	https://orca.cardiff.ac.uk/id/eprint/17405

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