Thermal Response in Nano Junctions Out of Equilibrium

by Yair Mazal

at Condensed Matter Theory Seminar

Wed, 22 Nov 2017, 13:30
Physics building (#54) room 207


Thermo electric effects in nano scale junctions are an important tool for studying electron dynamics in such systems and hold potential for future uses in energy conversion Motivated by recent experimental progress we consider the non equilibrium thermo electric response of a double quantum dot DQD Specifically we ask what is the effect of heating one of the leads in the junction on electric transport Using a rate equation formalism we are able to study a wide range of parameters including both tunneling within the DQD intra and inter dot Coulomb interactions and junction asymmetry In particular we show the significant role degeneracy play in transport in the presence of strong interaction We also discuss levels connected in parallel and show that the interplay between hopping and Coulomb interactions can be used as a switching mechanism Finally we show that at finite temperature difference between leads non monotonic dependence of current on temperature difference is expected All these predictions are made for realistic parameters which can be tuned in an actual apparatus

Created on 15-11-2017 by Bar Lev, Yevgeny (ybarlev)
Updaded on 15-11-2017 by Bar Lev, Yevgeny (ybarlev)