Bosisio, Riccardo ; Gorini, Cosimo ; Fleury, Geneviève ; Pichard, Jean-Louis
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| Item type: | Article |
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| Journal or Publication Title: | Physica E Low-dimensional Systems and Nanostructures |
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| Publisher: | Elsevier |
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| Volume: | 74 |
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| Page Range: | p. 340 |
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| Date: | 2015 |
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| Additional Information (public): | Physica E special issue in memory of Markus Büttiker |
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| Institutions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter |
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| Identification Number: | | Value | Type |
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| 1507.07315 | arXiv ID | | 10.1016/j.physe.2015.07.012 | DOI |
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| Keywords: | MOSFET; Heat management; Hopping transport; Semiconductor nanowires |
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| Dewey Decimal Classification: | 500 Science > 530 Physics |
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| Status: | In Press |
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| Refereed: | Yes, this version has been refereed |
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| Created at the University of Regensburg: | Partially |
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| Item ID: | 32352 |
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Abstract
We consider nanowires in the field effect transistor device configuration. Modeling each nanowire as a one dimensional lattice with random site potentials, we study the heat exchanges between the nanowire electrons and the substrate phonons, when electron transport is due to phonon-assisted hops between localized states. Shifting the nanowire conduction band with a metallic gate induces different ...
Abstract
We consider nanowires in the field effect transistor device configuration. Modeling each nanowire as a one dimensional lattice with random site potentials, we study the heat exchanges between the nanowire electrons and the substrate phonons, when electron transport is due to phonon-assisted hops between localized states. Shifting the nanowire conduction band with a metallic gate induces different behaviors. When the Fermi potential is located near the band center, a bias voltage gives rise to small local heat exchanges which fluctuate randomly along the nanowire. When it is located near one of the band edges, the bias voltage yields heat currents which flow mainly from the substrate towards the nanowire near one boundary of the nanowire, and in the opposite direction near the other boundary. This opens interesting perspectives for heat management at submicron scales: arrays of parallel gated nanowires could be used for a field control of phonon emission/absorption.
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