Charge-carrier-induced frequency renormalization, damping, and heating of vibrational modes in nanoscale junctions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10173496" target="_blank" >RIV/00216208:11320/13:10173496 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.88.201405" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.88.201405</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.88.201405" target="_blank" >10.1103/PhysRevB.88.201405</a>
Alternative languages
Result language
angličtina
Original language name
Charge-carrier-induced frequency renormalization, damping, and heating of vibrational modes in nanoscale junctions
Original language description
In nanoscale junctions the interaction between charge carriers and the local vibrations results in renormalization, damping, and heating of the vibrational modes. Here we formulate a nonequilibrium Green's function based theory to describe such effects.Studying a generic junction model with an off-resonant electronic level, we find a strong bias dependence of the frequency renormalization and vibrational damping accompanied by pronounced nonlinear vibrational heating in junctions with intermediate values of the coupling to the leads. Combining our theory with ab initio calculations, we furthermore show that the bias dependence of the Raman shifts and linewidths observed experimentally in an oligo(3)-phenylenevinylene (OPV3) junction [Ward et al., Nat.Nanotechnol. 6, 33 (2011)] may be explained by a combination of dynamic carrier screening and molecular charging.
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
<a href="/en/project/GAP204%2F12%2F0897" target="_blank" >GAP204/12/0897: Role of initial and open boundary conditions in the non-equilibrium dynamics of electrons in mesoscopic systems</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2013
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 - Condensed Matter and Materials Physics
ISSN
1098-0121
e-ISSN
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Volume of the periodical
88
Issue of the periodical within the volume
20
Country of publishing house
US - UNITED STATES
Number of pages
5
Pages from-to
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UT code for WoS article
000327161800001
EID of the result in the Scopus database
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