Electronic Resource
s.l. ; Stafa-Zurich, Switzerland
Solid state phenomena
Vol. 121-123 (Mar. 2007), p. 685-688
ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
The quantum transmission characteristic of three-terminal C60 molecular bridge is investigatedtheoretically by using Green's function approach based on tight-binding theory with only one π orbital per carbonatom inside C60 molecule. The transmission spectra that electrons transport through the C60 molecular bridge fromone terminal to the other two terminals are obtained. The electronic current distributions inside the molecularbridge are calculated and shown in graphical analogy by the current density method based on Fisher-Lee formulaat the energy points E=±0.42, ±1.06 and ±1.5, respectively, where the transmission probabilities appear peaks. Wefound that the transmission spectra are related to the incident electronic energy, and depend on C60 molecularlevels strongly. We also found that the electrons transport through the C60 molecular bridge symmetrically, andthe multi-point switching properties depend on the energy. That the current distributions in the C60 molecularbridge agree well with Kirchhoff quantum current momentum conservation law is shown
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/23/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.121-123.685.pdf
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