Web Release Date: November 16,
Graphene Nanostrip Digital Memory Device
and
Naval Research Laboratory, Washington, District of Columbia 20375, George Washington University, Washington, District of Columbia 20052, and Oklahoma State University, Stillwater, Oklahoma 74078
Received July 23, 2007
Revised September 18, 2007
Abstract:
In equilibrium, graphene nanostrips, with hydrogens sp2-bonded to carbons along their zigzag edges, are expected to exhibit a spin-polarized ground state. However, in the presence of a ballistic current, we find that there exists a voltage range over which both spin-polarized and spin-unpolarized nanostrip states are stable. These states can represent a bit in a binary memory device that could be switched through the applied bias and read by measuring the current through the nanostrip.
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