Lineshape of the thermopower of quantum dots
| Autor: | Henrik Nilsson, Hongqi Xu, Ann Persson, E. A. Hoffmann, Lars Samuelson, Heiner Linke, N. Nakpathomkun, S. Fahlvik Svensson |
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| Rok vydání: | 2011 |
| Předmět: |
Physics
Condensed Matter - Materials Science Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics Energy conversion efficiency General Physics and Astronomy Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences Fermi energy Function (mathematics) Condensed Matter Physics Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter::Materials Science Electrical resistance and conductance Quantum dot Seebeck coefficient Condensed Matter::Superconductivity Thermoelectric effect Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Condensed Matter::Strongly Correlated Electrons Quantum tunnelling |
| Zdroj: | New Journal of Physics; 14 (2012) |
| ISSN: | 1367-2630 |
| DOI: | 10.48550/arxiv.1110.0352 |
| Popis: | Quantum dots are an important model system for thermoelectric phenomena, and may be used to enhance the thermal-to-electric energy conversion efficiency in functional materials. It is therefore important to obtain a detailed understanding of a quantum-dot's thermopower as a function of the Fermi energy. However, so far it has proven difficult to take effects of co-tunnelling into account in the interpretation of experimental data. Here we show that a single-electron tunnelling model, using knowledge of the dot's electrical conductance which in fact includes all-order co-tunneling effects, predicts the thermopower of quantum dots as a function of the relevant energy scales, in very good agreement with experiment. Comment: 10 pages, 5 figures |
| Databáze: | OpenAIRE |
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