Graphene nanostrip digital memory device.
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.
Gunlycke
Daniel
D
Naval Research Laboratory, Washington, DC 20375, USA. daniel.gunlycke@nrl.navy.mil
Areshkin
Denis A
DA
Li
Junwen
J
Mintmire
John W
JW
White
Carter T
CT
D003198:Computer Simulation; D004563:Electrochemistry; D006108:Graphite / Q000737:chemistry*; D006860:Hydrogen Bonding; D008954:Models, Biological; D008956:Models, Chemical; D008958:Models, Molecular; D036103:Nanotechnology; D037742:Nanotubes, Carbon / Q000737:chemistry*; D012996:Solutions
D037742:Nanotubes, Carbon; D012996:Solutions; D006108:Graphite