Transmission of heat modes across a potential barrier
| Autor: | Ivan P. Levkivskyi, Amir Rosenblatt, Itamar Gurman, F. Lafont, Vladimir Umansky, Daniel Banitt, Moty Heiblum, Ron Sabo |
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| Rok vydání: | 2017 |
| Předmět: |
Science
Quantum point contact General Physics and Astronomy FOS: Physical sciences Quantum Hall effect 01 natural sciences Article General Biochemistry Genetics and Molecular Biology 010305 fluids & plasmas 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Rectangular potential barrier 010306 general physics lcsh:Science Quantum Physics Mesoscopic physics Multidisciplinary Heat current Condensed Matter - Mesoscale and Nanoscale Physics Charge (physics) General Chemistry Mechanics Heat transfer lcsh:Q |
| Zdroj: | Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017) Nature Communications |
| DOI: | 10.48550/arxiv.1712.08413 |
| Popis: | Controlling the transmission of electrical current using a quantum point contact constriction paved a way to a large variety of experiments in mesoscopic physics. The increasing interest in heat transfer in such systems fosters questions about possible manipulations of quantum heat modes that do not carry net charge (neutral modes). Here we study the transmission of upstream neutral modes through a quantum point contact in fractional hole-conjugate quantum Hall states. Employing two different measurement techniques, we were able to render the relative spatial distribution of these chargeless modes with their charged counterparts. In these states, which were found to harbor more than one downstream charge mode, the upstream neutral modes are found to flow with the inner charge mode—as theoretically predicted. These results unveil a universal upstream heat current structure and open the path for more complex engineering of heat flows and cooling mechanisms in quantum nano-electronic devices. Understanding the transfer of heat currents, specifically, neutral heat modes which do not carry net charge, is of great interest. Here, the authors study the transmission of upstream neutral modes through a quantum point contact in order to render the relative spatial distribution of these chargeless modes. |
| Databáze: | OpenAIRE |
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