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@ARTICLE{Vanherck:836897,
author = {Vanherck, Joren and Schulenborg, Jens and Saptsov, Roman
and Splettstoesser, Janine and Wegewijs, Maarten R.},
title = {{R}elaxation of quantum dots in a magnetic field at finite
bias - {C}harge, spin, and heat currents},
journal = {Physica status solidi / B},
volume = {254},
number = {3},
issn = {0370-1972},
address = {Weinheim},
publisher = {Wiley-VCH70889},
reportid = {FZJ-2017-05929},
pages = {1600614},
year = {2017},
abstract = {We perform a detailed study of the effect of finite bias
and magnetic field on the tunneling-induced decay of the
state of a quantum dot by applying a recently discovered
general duality [Phys. Rev. B 93, 81411 (2016)]. This
duality provides deep physical insight into the decay
dynamics of electronic open quantum systems with strong
Coulomb interaction. It associates the amplitudes of decay
eigenmodes of the actual system to the eigenmodes of a
so-called dual system with attractive interaction. Thereby,
it predicts many surprising features in the transient
transport and its dependence on experimental control
parameters: the attractive interaction of the dual model
shows up as sharp features in the amplitudes of measurable
time-dependent currents through the actual repulsive system.
In particular, for interacting quantum dots, the
time-dependent heat current exhibits a decay mode that
dissipates the interaction energy and that is tied to the
fermion parity of the system. We show that its decay
amplitude has an unexpected gate-voltage dependence that is
robust up to sizable bias voltages and then bifurcates,
reflecting that the Coulomb blockade is lifted in the dual
system. Furthermore, combining our duality relation with the
known Iche-duality, we derive new symmetry properties of the
decay rates as a function of magnetic field and gate
voltage. Finally, we quantify charge- and spin-mode mixing
due to the magnetic field using a single mixing parameter.},
cin = {PGI-2},
ddc = {530},
cid = {I:(DE-Juel1)PGI-2-20110106},
pnm = {141 - Controlling Electron Charge-Based Phenomena
(POF3-141)},
pid = {G:(DE-HGF)POF3-141},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000395441500011},
doi = {10.1002/pssb.201600614},
url = {https://juser.fz-juelich.de/record/836897},
}