Thermal energy and charge currents in multi-terminal nanorings
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 ste...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2016-06-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.4953812 |
| _version_ | 1818131305119875072 |
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| author | Tobias Kramer Christoph Kreisbeck Christian Riha Olivio Chiatti Sven S. Buchholz Andreas D. Wieck Dirk Reuter Saskia F. Fischer |
| author_facet | Tobias Kramer Christoph Kreisbeck Christian Riha Olivio Chiatti Sven S. Buchholz Andreas D. Wieck Dirk Reuter Saskia F. Fischer |
| author_sort | Tobias Kramer |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-11T08:18:49Z |
| format | Article |
| id | doaj.art-7ed33eeada8146619a982a88c3e584f2 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-11T08:18:49Z |
| publishDate | 2016-06-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-7ed33eeada8146619a982a88c3e584f22022-12-22T01:14:43ZengAIP Publishing LLCAIP Advances2158-32262016-06-0166065306065306-610.1063/1.4953812024606ADVThermal energy and charge currents in multi-terminal nanoringsTobias Kramer0Christoph Kreisbeck1Christian Riha2Olivio Chiatti3Sven S. Buchholz4Andreas D. Wieck5Dirk Reuter6Saskia F. Fischer7Novel Materials Group, Institut für Physik, Humboldt-Universität zu Berlin, 12489 Berlin, GermanyNovel Materials Group, Institut für Physik, Humboldt-Universität zu Berlin, 12489 Berlin, GermanyNovel Materials Group, Institut für Physik, Humboldt-Universität zu Berlin, 12489 Berlin, GermanyNovel Materials Group, Institut für Physik, Humboldt-Universität zu Berlin, 12489 Berlin, GermanyNovel Materials Group, Institut für Physik, Humboldt-Universität zu Berlin, 12489 Berlin, GermanyAngewandte Festkörperphysik, Ruhr-Universität Bochum, 44780 Bochum, GermanyOptoelektronische Materialien und Bauelemente, Universität Paderborn, 33098 Paderborn, GermanyNovel Materials Group, Institut für Physik, Humboldt-Universität zu Berlin, 12489 Berlin, GermanyWe 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.http://dx.doi.org/10.1063/1.4953812 |
| spellingShingle | Tobias Kramer Christoph Kreisbeck Christian Riha Olivio Chiatti Sven S. Buchholz Andreas D. Wieck Dirk Reuter Saskia F. Fischer Thermal energy and charge currents in multi-terminal nanorings AIP Advances |
| title | Thermal energy and charge currents in multi-terminal nanorings |
| title_full | Thermal energy and charge currents in multi-terminal nanorings |
| title_fullStr | Thermal energy and charge currents in multi-terminal nanorings |
| title_full_unstemmed | Thermal energy and charge currents in multi-terminal nanorings |
| title_short | Thermal energy and charge currents in multi-terminal nanorings |
| title_sort | thermal energy and charge currents in multi terminal nanorings |
| url | http://dx.doi.org/10.1063/1.4953812 |
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