TY  - GEN
UR  - https://archiv.ub.uni-heidelberg.de/volltextserver/14580/
Y1  - 2013///
TI  - Transient noise spectra in mesoscopic systems
N2  - 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.


ID  - heidok14580
AV  - public
A1  - Joho, Karsten
ER  -