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Applied Physics Letters / Volume 96 / Issue 26 / MAGNETISM AND SUPERCONDUCTIVITY

Appl. Phys. Lett. 96, 262510 (2010); http://dx.doi.org/10.1063/1.3457998 (3 pages)

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

Huang T. Zeng, D. Read, L. O’Brien, J. Sampaio, E. R. Lewis, D. Petit, and R. P. Cowburn

Imperial College London, London SW7 2AZ, United Kingdom

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(Received 17 May 2010; accepted 4 June 2010; published online 1 July 2010)

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.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

ferromagnetic materials, logic gates, Permalloy, readout electronics, shift registers

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3457998

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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