Phonon-Induced Decoherence in Electron Evolution View Full Text


Ontology type: schema:Chapter     


Chapter Info

DATE

2012

AUTHORS

Philipp Schwaha , Mihail Nedjalkov , Siegfried Selberherr , Ivan Dimov

ABSTRACT

A Monte Carlo analysis of the evolution of an electron interacting with phonons is presented in terms of a Wigner function. The initial electron state is constructed by a superposition of two wave packets and a pronounced interference term. The results show that phonons effectively destroy the interference term. The initial coherence in wave vector distribution is pushed towards the equilibrium distribution. Phonons hinder the natural spread of the density with time and advance it towards a classical localization. The decoherence effect due to phonons, which brings about the transition from a quantum to a classical state, is demonstrated by the purity of the state, which decreases from its initial value of 1, with a rate depending on the lattice temperature. More... »

PAGES

472-479

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/978-3-642-29843-1_53

DOI

http://dx.doi.org/10.1007/978-3-642-29843-1_53

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1046011223


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