An ultrafast image recovery and recognition system implemented with nanomagnets possessing biaxial magnetocrystalline anisotropy

Autor:	D'Souza, Noel, Atulasimha, Jayasimha, Bandyopadhyay, Supriyo
Rok vydání:	2011
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	IEEE Transactions on Nanotechnology, Vol. 11, p. 896, 2012
Druh dokumentu:	Working Paper
DOI:	10.1109/TNANO.2012.2204769
Popis:	A circular magnetic disk with biaxial magnetocrystalline anisotropy has four stable magnetization states which can be used to encode a pixel's shade in a black/gray/white image. By solving the Landau-Lifshitz- Gilbert equation, we show that if moderate noise deflects the magnetization slightly from a stable state, it always returns to the original state, thereby automatically de-noising the corrupted image. The same system can compare a noisy input image with a stored image and make a matching decision using magneto-tunneling junctions. These tasks are executed at ultrahigh speeds (~2 ns for a 512\times512 pixel image). Comment: Submitted to Applied Physics Letters
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1109.6932 Zobrazit plný text záznamu View this record from Arxiv