Multiple bit nonvolatile memory based on current induced domain wall motion in a nanowire magnetic tunnel junction
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United States of America Patent
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Dec 30, 2014
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app pub date -
Nov 6, 2012
filing date -
Nov 6, 2012
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Abstract
A mechanism is provided for storing multiple bits in a domain wall nanowire magnetic junction device. The multiple bits are encoded based on a resistance of the domain wall nanowire magnetic junction device using a single domain wall. The single domain wall is shifted to change the resistance of the domain wall nanowire magnetic junction device to encode a selected bit. The resistance is checked to ensure that it corresponds to a preselected resistance for the selected bit. Responsive to the resistance corresponding to the preselected resistance for the selected bit, the selected bit is stored. Responsive to the resistance not being the preselected resistance for the selected bit, the single domain wall is shifted until the resistance corresponds to the preselected resistance.
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