Publikation: Nonequilibrium phonon backaction on the current noise in atomic-sized junctions
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2011
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Physical Review B. 2011, 84(11). ISSN 1098-0121. Available under: doi: 10.1103/PhysRevB.84.113107
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We study backaction effects of phonon heating due to tunneling electrons on the current noise in atomic-sized junctions. Deriving a generalized kinetic approximation within the extended Keldysh Green’s functions technique, we demonstrate the existence of a characteristic backaction contribution to the noise in case of low external phonon damping. We provide a physically intuitive interpretation of this contribution at large voltage in terms of slow fluctuations of the phonon occupation and show that it generally gives a significant correction to the noise above the phonon emission threshold.
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NOVOTNÝ, Tomáš, Federica HAUPT, Wolfgang BELZIG, 2011. Nonequilibrium phonon backaction on the current noise in atomic-sized junctions. In: Physical Review B. 2011, 84(11). ISSN 1098-0121. Available under: doi: 10.1103/PhysRevB.84.113107BibTex
@article{Novotny2011Noneq-16161,
year={2011},
doi={10.1103/PhysRevB.84.113107},
title={Nonequilibrium phonon backaction on the current noise in atomic-sized junctions},
number={11},
volume={84},
issn={1098-0121},
journal={Physical Review B},
author={Novotný, Tomáš and Haupt, Federica and Belzig, Wolfgang}
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