Mechanical Oscillations and Charge Carriers in Nanostructures |
| Journal |
Materials Science Forum (Volume 518) |
| Volume |
Recent Developments in Advanced Materials and Processes |
| Edited by |
Dragan P. Uskokovic, Slobodan K. Milonjic and Dejan I. Rakovic |
| Pages |
47-50 |
| DOI |
10.4028/www.scientific.net/MSF.518.47 |
| Online since |
July, 2006 |
| Authors |
B.S. Tošić,
J.P. Šetrajčić,
V.D. Sajfert,
S.M. Vučenović,
D.Lj. Mirjanić,
S.K. Jaćimovski
|
| Keywords |
Autoreduction, Green's Function Technique, Isomorphism, Nano-Structure, Non-Isomorphism, Phonon Energy Gap, Skin Effect |
| Abstract |
The Green’s functions technique suitable for broken symmetry structure analysis was
developed. With the help of this new technique the phonon subsystem was analysed in ultrathin
films and in cylindrical nanotubes with finite height. The most interesting results of mentioned
analyses are spatial dependence of thermodynamical characteristics, existence of phonon gap and
extremely low specific heat and thermal conductivity at low temperatures. This promises wide
application of films and finite nanotubes in technology.
The same technique was applied to investigate electron subsystems in rectangular
nanostructures of all dimensions as well as in simple and full nanotubes. The most interesting
conclusion of these analyses is the presence of autoreduction effect being the consequence of nonisomorphic
transition configuration – momentum space. This effect represents a qualitative
difference between nano and macroscopic structures. The skin effect is present in all types of
nanostructures except nano-parallelepiped where antiskin effect takes place. The latter is quite
understandable, since in nano-parallelepiped nodes are on boundaries. |
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