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Tesi etd-05042006-093832


Thesis type
Tesi di dottorato di ricerca
Author
Marconcini, Paolo
URN
etd-05042006-093832
Title
Numerical simulation of transport and noise in nanoelectronic devices
Settore scientifico disciplinare
ING-INF/01
Corso di studi
INGEGNERIA DELL'INFORMAZIONE
Commissione
relatore Pellegrini, Bruno
relatore Macucci, Massimo
Parole chiave
  • scanning probe imaging techniques
  • nanoelectronic devices
  • chaotic cavities
  • carbon nanotubes
  • shot noise suppression
Data inizio appello
22/05/2006;
Consultabilità
parziale
Data di rilascio
22/05/2046
Riassunto analitico
We have developed numerical codes to simulate the transport and noise properties of devices based on a two-dimensional electron gas, also in the presence of an orthogonal magnetic field, and we have applied them to the investigation of several structures. In particular, we have carried out an analysis of shot noise suppression in mesoscopic cavities as a function of the details of the potential and of the orthogonal magnetic field. Moreover, we have simulated the results achievable with electron flow imaging based on a scanning probe method. Furthermore we have numerically studied several properties of carbon nanotubes: we have determined their energy bands and density of states, using both global and local methods. We have computed the wave functions of the free electrons in the nanotube and the dispersion relations for the phonons.
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