Thermoelectric effects in molecular quantum dots with contacts
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00432315" target="_blank" >RIV/68378271:_____/14:00432315 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.89.155133" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.89.155133</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.89.155133" target="_blank" >10.1103/PhysRevB.89.155133</a>
Alternative languages
Result language
angličtina
Original language name
Thermoelectric effects in molecular quantum dots with contacts
Original language description
We consider the steady-state thermoelectric transport through a vibrating molecular quantum dot that is contacted to macroscopic leads. For moderate electron-phonon interaction strength and comparable electronic and phononic timescales, we investigate the impact of the formation of a local polaron on the thermoelectric properties of the junction. We apply a variational Lang-Firsov transformation and solve the equations of motion in the Kadanoff-Baym formalism up to second order in the dot-lead couplingparameter. We calculate the thermoelectric current and voltage for finite temperature differences in the resonant and inelastic tunneling regimes. For a near resonant dot level, the formation of a local polaron can boost the thermoelectric effect becauseof the Franck-Condon blockade. The line shape of the thermoelectric voltage signal becomes asymmetrical due to the varying polaronic character of the dot state and in the nonlinear transport regime, vibrational signatures arise.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review. B
ISSN
1098-0121
e-ISSN
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Volume of the periodical
89
Issue of the periodical within the volume
15
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
"155133-1"-"155133-11"
UT code for WoS article
000335499000003
EID of the result in the Scopus database
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