|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'928
Articles rated: 2609
25 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Asymmetric currents in a donor (D)-bridge (B)-acceptor (A) single molecule - revisit of the Aviram-Ratner diode | | Haiying He
; Ravindra Pandey
; Govind Mallick
; Shashi P. Karna
; | | Date: |
19 Sep 2008 | | Abstract: | The quantum transport via a donor (D)-bridge (B)-acceptor (A) single molecule
is studied using density functional theory in conjunction with the
Landauer-B"{u}ttiker formalism. Asymmetric electrical response for opposite
biases is observed resulting in significant rectification in current. The
intrinsic dipole moment induced by substituent side groups in the molecule
leads to enhanced/reduced polarization of the system under a forward/reverse
applied potential, thus asymmetry in the charge distribution and the electronic
current under bias. Under a forward bias, the energy gap between the D and A
frontier orbitals closes and the current increases rapidly; whereas under a
reverse bias, the D-A gap widens and the current remains small. | | Source: | arXiv, 0809.3268 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER