Nonlinear thermovoltage in a single-electron transistor

@article{Erdman2019NonlinearTI,
  title={Nonlinear thermovoltage in a single-electron transistor},
  author={Paolo Andrea Erdman and Joonas T. Peltonen and Bibek Bhandari and B. Dutta and H. Courtois and Rosario Fazio and Fabio Taddei and Jukka P. Pekola},
  journal={Physical Review B},
  year={2019}
}
We perform direct thermovoltage measurements in a single-electron transistor, using on-chip local thermometers, both in the linear and non-linear regimes. Using a model which accounts for co-tunneling, we find excellent agreement with the experimental data with no free parameters even when the temperature difference is larger than the average temperature (far-from-linear regime). This allows us to confirm the sensitivity of the thermovoltage on co-tunneling and to find that in the non-linear… Expand
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References

SHOWING 1-10 OF 101 REFERENCES
Cotunneling thermopower of single electron transistors
We study the thermopower of a quantum dot weakly coupled to two reservoirs by tunnel junctions. At low temperatures the transport through the dot is suppressed by charging effects (Coulomb blockade).Expand
Quantum-fluctuation effects on the thermopower of a single-electron transistor
We study thermal conductance and thermopower of a metallic single-electron transistor beyond the limit of weak tunnel coupling. Employing both a systematic second-order perturbation expansion and aExpand
Thermal Conductance of a Single-Electron Transistor.
TLDR
The Wiedemann-Franz law for the ratio of heat and charge conductances is found to be systematically violated away from the charge degeneracy points, and the observed deviation agrees well with the theoretical expectation. Expand
Giant mesoscopic fluctuations of the elastic cotunneling thermopower of a single-electron transistor
We study the thermoelectric transport of a small metallic island weakly coupled to two electrodes by tunnel junctions. In the Coulomb blockade regime, in the case when the ground state of the systemExpand
Coulomb-Blockade Oscillations in the Thermopower of a Quantum Dot.
The thermopower of a quantum dot, defined in the two-dimensional electron gas in a GaAs-AlxGa1-xAs heterostructure, is investigated using a current heating technique. At lattice temperatures kBT muchExpand
Coulomb blockade oscillations in the thermopower of open quantum dots.
TLDR
It is shown that Coulomb blockade oscillations of thermoelectric coefficients of a single electron transistor based on a quantum dot strongly coupled to one of the leads depends on temperature only logarithmically. Expand
Violation of the Wiedemann-Franz law in a single-electron transistor.
TLDR
It is found that Coulomb interaction leads to a strong violation of the Wiedemann-Franz law: the Lorenz ratio becomes gate-voltage dependent for sequential tunneling, and is increased by a factor 9/5 in the cotunneling regime. Expand
Theory of the thermopower of a quantum dot.
TLDR
A linear-response theory is presented for the thermopower of a quantum dot of small capacitance, and the periodicity of the oscillations is the same as that of the previously studied Coulomb-blockade oscillations in the conductance. Expand
Thermopower of single-molecule devices
We investigate the thermopower of single molecules weakly coupled to metallic leads. We model the molecule in terms of the relevant electronic orbitals coupled to phonons corresponding to bothExpand
Quantum thermal conductance of electrons in a one-dimensional wire.
TLDR
An electron thermometer is used to measure the temperature rise of approximately 2 x 10(5) electrons in a two-dimensional box, due to heat flow into the box through a ballistic one-dimensional (1D) constriction, which deduces the thermal conductance kappa(Vg) of the 1D constriction. Expand
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