Spin transport sensor
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United States of America Patent
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Jul 21, 2015
Grant Date -
Apr 30, 2015
app pub date -
Oct 31, 2013
filing date -
Oct 31, 2013
priority date (Note) -
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Abstract
The implementations disclosed herein provide for a spin transport sensor including a synthetic antiferromagnet (SAF) adjacent a shield element. The SAF extends to an air-bearing surface (ABS) and provides a current path from a current source to an ABS-region of a spin conductor layer. Spin current diffuses from the spin conductor layer to an adjacent free layer, which generates a measurable electrical voltage in a free layer of the spin transport sensor. The SAF serves as both a magnetic shield and a spin injector to the spin conductor layer.
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