1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Current and noise in a model of an alternating current scanning tunneling microscope molecule-metal junction
Rent:
Rent this article for
USD
10.1063/1.1878593
/content/aip/journal/jcp/122/14/10.1063/1.1878593
http://aip.metastore.ingenta.com/content/aip/journal/jcp/122/14/10.1063/1.1878593
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

System: the molecule (quantum dot) sandwiched between a substrate and a STM tip.

Image of FIG. 2.
FIG. 2.

Zero-frequency noise (upper graph) and its first derivative (lower graph) as a function of the ratio in the regime of a small ac bias for the single-dot system. Fermi energy of the substrate is fixed to and energy level of the dot is the origin of the energy. Comparisons are made between the two-electrode case and different values of hopping in the dot-metal junction.

Image of FIG. 3.
FIG. 3.

Same as Fig. 2 for an ac bias: .

Image of FIG. 4.
FIG. 4.

Same as Fig. 2 for an ac bias: .

Image of FIG. 5.
FIG. 5.

Same as Fig. 3 in the case of a resonance between the energy level of the dot and the Fermi energy of the substrate, .

Image of FIG. 6.
FIG. 6.

Zero-frequency noise for a two-site molecule as a function of the ratio for ac bias . Full line, ; dashed line, ; dot-dashed, ; dotted line, . The hopping between the two sites is . Vertical dashed line corresponds to the bonding and antibonding orbitals. Plots are given for: (a) ; (b) (resonance with highest level).

Image of FIG. 7.
FIG. 7.

Stationary current and its three lowest harmonics as a function of the ratio for the single dot system. The ac bias is fixed to . The Fermi energy and the dot level are the same than in previous graph . Full line, ; dashed line, ; dot-dashed, ; dotted line, . Inset: stationary current as a function of for small values of this ratio .

Image of FIG. 8.
FIG. 8.

Stationary current and its three lowest harmonics as a function of the ratio for the two-site molecule. The alternative voltage is fixed to . The Fermi energy and . Full line, ; dashed line, ; dot-dashed, ; dotted line, .

Loading

Article metrics loading...

/content/aip/journal/jcp/122/14/10.1063/1.1878593
2005-04-11
2014-04-24
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Current and noise in a model of an alternating current scanning tunneling microscope molecule-metal junction
http://aip.metastore.ingenta.com/content/aip/journal/jcp/122/14/10.1063/1.1878593
10.1063/1.1878593
SEARCH_EXPAND_ITEM