Memristive device having a porous dopant diffusion element
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United States of America Patent
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Jul 15, 2014
Grant Date -
Jul 21, 2011
app pub date -
Dec 23, 2008
filing date -
Dec 23, 2008
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Abstract
A memristive device includes: a first electrode; a second electrode; a memristive matrix interposed between the first electrode and the second electrode; a porous dopant diffusion element in physical contact with the memristive matrix and in proximity to the first electrode and the second electrode; and a first mobile dopant species which moves through the porous dopant diffusion element in response to a programming electrical field. A method for using a memristive device having a porous dopant diffusion element includes applying a voltage bias to generate a programming electrical field such that dopants move through the porous dopant diffusion element, thereby changing the distribution of dopants within a memristive matrix to form a first state; removing the voltage bias, the dopants being substantially immobile in the absence of the programming electrical field; and applying a reading energy to the memristive device to sense the first state.
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