INVESTIGADORES
DEL POPOLO Mario Gabriel
artículos
Título:
On the reasons for stepwise changes in the tunneling current across metallic nanogaps
Autor/es:
NARAMBUENA C.F., DEL POPOLO M.G., LEIVA E.P.M.
Revista:
NANO LETTERS (PRINT)
Editorial:
AMER CHEMICAL SOC
Referencias:
Año: 2003 vol. 3 p. 1633 - 1637
ISSN:
1530-6984
Resumen:
Tao and co-workers (Li, C. Z.; He, H. X.; Tao, N. J. AppL Phys. Lett. 2000, 77, 3995-3997) have shown experimentally that the size of the nanogap between two electrodes changes with increments that are very often close to 0.5 Angstroms. We employ a grand canonical Monte Carlo simulation using embedded atom potentials to analyze some aspects of this phenomenon. Although the simulations do not deliver a single distance but a log-normal-like distribution of distance increments that presents a maximum close to 0.5 Angstroms, the present results provide insight for understanding why the changes in the distances in the nanogaps are considerably smaller that the distances between lattice planes.
