Resistive switches
AssigneeHewlett-Packard Development Company, L.P.
InventorsJianhua Yang, Dmitri Borisovich Strukov, Shih-Yuan Wang
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Abstract
Resistive switches and related methods are provided. Such a resistive switch includes an active material in contact with opposite end electrodes. The active material defines electron traps that capture or release charges in accordance with applied switching voltages. Resistive switches are characterized by ON state and OFF state resistance curves. Resistance ratios of ten times or more are exhibited. The state of a resistive switch is determined using sensing voltages lesser then the switching threshold.
Claims14
An apparatus including a resistive switch, the resistive switch comprising:
- a first electrode;
- an active material layer in contact with the first electrode;
- and
- a second electrode disposed opposite the first electrode, the active material layer in contact with the second electrode, the resistive switch characterized by a first electrical resistance curve in response to an applied forward switching voltage, the resistive switch further characterized by a second electrical resistance curve in response to an applied reverse switching voltage, the second electrical resistance curve being different than the first electrical resistance curve,
- wherein the active material layer is to define a plurality of electron traps.
A method, comprising:
- operating a resistive switch characterized by first electrical resistance curve, the resistive switch characterized by a first end electrode and a second end electrode and an active material layer disposed between and in contact with the first and second end electrodes, the active material layer being to define a plurality of electron traps;
- switching the resistive switch so as to change the character of the resistive switch from the first electrical resistance curve to a second electrical resistance curve distinct from the first;
- and
- operating the resistive switch characterized by the second electrical resistance curve.
Dependencies are inferred from the claim text.