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Nonlinear thermovol...
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Fahlvik Svensson, SofiaLund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
(författare)
Nonlinear thermovoltage and thermocurrent in quantum dots
- Artikel/kapitelEngelska2013
Förlag, utgivningsår, omfång ...
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2013-10-16
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IOP Publishing,2013
Nummerbeteckningar
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LIBRIS-ID:oai:lup.lub.lu.se:5ec94b5e-a979-4535-b9ce-59f36a2d8239
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https://lup.lub.lu.se/record/4160439URI
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https://doi.org/10.1088/1367-2630/15/10/105011DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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Ämneskategori:ref swepub-contenttype
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Quantum dots are model systems for quantum thermoelectric behavior because of their ability to control and measure the effects of electron-energy filtering and quantum confinement on thermoelectric properties. Interestingly, nonlinear thermoelectric properties of such small systems can modify the efficiency of thermoelectric power conversion. Using quantum dots embedded in semiconductor nanowires, we measure thermovoltage and thermocurrent that are strongly nonlinear in the applied thermal bias. We show that most of the observed nonlinear effects can be understood in terms of a renormalization of the quantum-dot energy levels as a function of applied thermal bias and provide a theoretical model of the nonlinear thermovoltage taking renormalization into account. Furthermore, we propose a theory that explains a possible source of the observed, pronounced renormalization effect by the melting of Kondo correlations in the mixed-valence regime. The ability to control nonlinear thermoelectric behavior expands the range in which quantum thermoelectric effects may be used for efficient energy conversion.
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Biuppslag (personer, institutioner, konferenser, titlar ...)
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Hoffmann, E. A.
(författare)
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Nakpathomkun, N.
(författare)
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Wu, PhillipLund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ftf-ppw
(författare)
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Xu, HongqiLund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ftf-hxu
(författare)
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Nilsson, HenrikLund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ftf-hns
(författare)
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Sanchez, D.
(författare)
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Kashcheyevs, V.
(författare)
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Linke, HeinerLund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ftf-hle
(författare)
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Fasta tillståndets fysikFysiska institutionen
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Sammanhörande titlar
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Ingår i:New Journal of Physics: IOP Publishing151367-2630
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