INVESTIGADORES
GALLAY Pablo
artículos
Título:
Model non-linear nano-electronic device
Autor/es:
CHRISTIAN F.A. NEGRE, PABLO A. GALLAY, CRISTIÁN G. SÁNCHEZ
Revista:
CHEMICAL PHYSICS LETTERS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2008 vol. 460 p. 220 - 224
ISSN:
0009-2614
Resumen:
We show a simple model for a non-linear nano-electronic device displaying a range of current-voltagecharacteristics including negative differential resistance, multistability and rectification. The tight-bindingmodel for the device consists of a pair of coupled quantum dots attached to two semi-infinite linearmono-atomic chains. Non-linearity is introduced via electron?electron coulomb repulsion through anonsite Hubbard U. We study the mean-field electronic structure of the device as a function of appliedpotential difference for a range of values of the intra-device coupling and coupling to the leads.
