Electron dynamics inside short-coherence systems

We present theoretical results on electron dynamics inside nanometric systems, where the coherence of the electron ensemble is maintained in a very short region. The contacts are supposed to spoil such a coherence, therefore the interference processes between the carrier wavefunction and the interna...

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Bibliographic Details
Published inPhysics letters. A Vol. 356; no. 4; pp. 371 - 375
Main Authors Ferrari, Giulio, Bordone, Paolo, Jacoboni, Carlo
Format Journal Article
LanguageEnglish
Published Elsevier B.V 14.08.2006
Subjects
Decoherence
Mesoscopic systems
Quantum transport
Wigner function
72.10.Bg
Wigner function
73.23.-b
Decoherence
05.60.Gg
Mesoscopic systems
Quantum transport
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Summary:We present theoretical results on electron dynamics inside nanometric systems, where the coherence of the electron ensemble is maintained in a very short region. The contacts are supposed to spoil such a coherence, therefore the interference processes between the carrier wavefunction and the internal potential profile can be affected by the proximity of the contacts. The problem has been analysed by using the Wigner-function formalism. For very short devices, transport properties, such as tunnelling through potential barriers, are significantly influenced by the distance between the contacts.
ISSN:0375-9601
1873-2429
DOI:10.1016/j.physleta.2006.03.060