Spin memory encryption
AssigneesColorado State University Research Foundation, Bryn Mawr College
InventorsKristen Buchanan, Xiao Wang, Xuemei Cheng
Life of this patent
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Abstract
A topological spin memory effect, defined as the recovery of magnetic skyrmions or magnetic bubble skyrmions in magnetic thin films after a transition to a dramatically different spin texture, is used for encrypted non-volatile information storage. The storage strategy is based on magnetic skyrmions, that is, topologically protected spin textures comprising chiral domain walls surrounding small (e.g., nanometers to microns in diameter), typically circular, single-domain cores. Systems and methods are described for encrypted non-volatile information storage based on a spin memory effect in magnetic thin films that support skyrmions. Systems and methods encrypt and recover information stored in the form of magnetic skyrmions.
Claims9
1-12. (canceled)
A system comprising:
- a multilayer film comprising a plurality of skyrmions that store data, wherein the multilayer film is configured to encrypt the data responsive to activating a control parameter;
- and
- a substrate on which the multilayer film is disposed.
A multilayer film comprising:
- a control layer;
- and
- a skyrmion layer comprising a plurality of skyrmions that store data that is configurable to be encrypted and decrypted responsive to the control layer being affected by a control parameter.
Dependencies are inferred from the claim text.