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Thermal energy and charge currents in multi-terminal nanorings (2016)

Kramer, Tobias ; Kreisbeck, Christoph ; Riha, Christian ; [weitere]

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Publikationsdatum: 2020-03-10

Beschreibung: We study in experiment and theory thermal energy and charge transfer close to the quantum limit in a ballistic nanodevice, consisting of multiply connected one-dimensional electron waveguides. The fabricated device is based on an AlGaAs/GaAs heterostructure and is covered by a global top-gate to steer the thermal energy and charge transfer in the presence of a temperature gradient, which is established by a heating current. The estimate of the heat transfer by means of thermal noise measurements shows the device acting as a switch for charge and thermal energy transfer. The wave-packet simulations are based on the multi-terminal Landauer-Büttiker approach and confirm the experimental finding of a mode-dependent redistribution of the thermal energy current, if a scatterer breaks the device symmetry.

Sprache: Englisch

Materialart: article , doc-type:article

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