Dresden 2003 – wissenschaftliches Programm
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SYCN: Computational nanoscience - from materials to biology
SYCN 102: Computational Nanoscience: From Materials to Biology (Poster, gemeinsam mit SYSE)
SYCN 102.17: Poster
Dienstag, 25. März 2003, 19:00–21:00, ZEU/160
AC-response of a carbon nanotube Y-junction — •Miriam del Valle1,2, Nitesh Ranjan3,2, and Gianaurelio Cuniberti4,2 — 1Dpto. Física Teórica de la Materia Condensada, UAM, Madrid — 2MPI - PKS, Dresden — 3Institut für Physikalische Chemie und Elektrochemie, TU Dresden — 4Institut für Theoretische Physik, Universität Regensburg
We present a study of the transport properties of carbon nanotube
(CNT) junctions under a time dependent driving such as
a laser field.
CNT junctions are of essential importance as they might enable a step
forward
in the way towards molecular computing devices.
We concentrate our analysis on symmetric CNT-Y-junctions connected to
three armchair CNTs, and calculate the linear conductance by means of the
Floquet formalism [1] and Green functions techniques, within a
π-orbital description of the carbon network.
We present a detailed study of the orientational dependence of the
junction relative to the laser field polarization
as well as its dependence on the external field frequency Ω.
Our results [2] show the important role of the molecular structure of the
Y junction on transport calculations.
[1] J.H. Shirley, Phys. Rev. 138, B979 (1965).
M. del Valle, N. Ranjan and G. Cuniberti, in preparation.