NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2013, 4 (4), P. 564–569
ELECTROPHYSICAL PROPERTIES OF CNT. THE AUGMENTED CYLINDRICAL WAVE METHOD
A.V. Pak – Volgograd State University, 400062, Volgograd, Russia; pak.anastasia@gmail.com
M. B. Belonenko – Entropique Inc., London, N6J 3S2, ON, Canada; Volgograd Institute of Business , 400048, Volgograd, Russia
P. N. Dyachkov – Institute of General and Inorganic Chemistry named after N.C. Kurnakov RAS, Moscow, Russia
Current-voltage characteristics of tunnel contact between semiconducting (and conducting) carbon nanotubes (CNT) of various diameters and system of periodically located quantum dots (and also in contact to metal) was obtained using density of states (DOS) investigation. DOS has been calculated by means of the method of attached cylindrical waves. At certain parameters for quantum dots, the current-voltage characteristics observed testify to the presence of negative differential conductivity.
Keywords: carbon nanotubes, density of the states, current-voltage characteristics.
PACS 71.10.Fd, 72.80.Vp