TITLE

Current controlled random-access memory based on magnetic vortex handedness

AUTHOR(S)
Bohlens, Stellan; Krüger, Benjamin; Drews, André; Bolte, Markus; Meier, Guido; Pfannkuche, Daniela
PUB. DATE
October 2008
SOURCE
Applied Physics Letters;10/6/2008, Vol. 93 Issue 14, p142508
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The theoretical foundation for a nonvolatile memory device based on magnetic vortices is presented. We propose a realization of a vortex random-access memory (VRAM) containing vortex cells that are controlled by alternating currents only. The proposed scheme allows to transfer the vortex into an unambiguous binary state regardless of its initial state within a subnanosecond time scale. The vortex handedness defined as the product of chirality and polarization as a bit representation allows direct mechanisms for reading and writing the bit information. The VRAM is stable at room temperature.
ACCESSION #
34850436

 

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