title: Transient noise spectra in mesoscopic systems
creator: Joho, Karsten
subject: 530
subject: 530 Physics
description: The focus of this thesis is on the time-dependent electronic quantum noise in nanostructures. Both basic models of mesoscopic physics considered in this context are exactly solvable and constitute effective descriptions of experimentally realizable systems. They consist of a quantum dot that is coupled via quantum tunneling to two electrodes. In one case, the electron-electron interaction is completely neglected, whereas in the other, it is taken into account in a specific manner. On the basis of these models, it is shown by means of the Schwinger-Keldysh formalism how the current noise approaches its steady state after an abrupt change of a system parameter and in what respect this behavior differs qualitatively from the time evolution of the current itself. Moreover, the first steps toward the treatment of a related problem - the time-dependent heat noise - are presented.    
date: 2013
type: Dissertation
type: info:eu-repo/semantics/doctoralThesis
type: NonPeerReviewed
format: application/pdf
identifier: https://archiv.ub.uni-heidelberg.de/volltextserverhttps://archiv.ub.uni-heidelberg.de/volltextserver/14580/1/final.pdf
identifier: DOI:10.11588/heidok.00014580
identifier: urn:nbn:de:bsz:16-heidok-145802
identifier:   Joho, Karsten  (2013) Transient noise spectra in mesoscopic systems.  [Dissertation]     
relation: https://archiv.ub.uni-heidelberg.de/volltextserver/14580/
rights: info:eu-repo/semantics/openAccess
rights: http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html
language: eng