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Effect of the peierls transition on the phonon spectrum in TTF-TCNQ crystals

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dc.contributor.author ANDRONIC, Silvia
dc.contributor.author BALMUȘ, Ion
dc.contributor.author CASIAN, Anatolie
dc.date.accessioned 2019-03-07T10:01:16Z
dc.date.available 2019-03-07T10:01:16Z
dc.date.issued 2016
dc.identifier.citation ANDRONIC, Silvia, BALMUȘ, Ion, CASIAN, Anatolie. Effect of the peierls transition on the phonon spectrum in TTF-TCNQ crystals [Resursă electronică]. In: Conferința Tehnico-Științifică a Colaboratorilor, Doctoranzilor și Studenților, Universitatea Tehnică a Moldovei, 26-28 noiembrie, 2015. Chișinău, 2016, vol. 1, pp. 123-126. ISBN 978-9975-45-440-7. ISBN 978-9975-45-441-4 (Vol.1). en_US
dc.identifier.isbn 978-9975-45-543-5
dc.identifier.uri http://repository.utm.md/handle/5014/806
dc.description Resursă electronică en_US
dc.description.abstract It was demontrated theoretically that organic crystals of TTF-TCNQ are good candidates for thermoelectric materials. Because not all parameters of these materials are known, it is necessary to determine some of them. We’ll use the Peierls transition phenomenon for this aim. In this work we study how the photon spectrum varies in quasi-one-dimensional organic crystal TTF-TCNQ close to Peierls transition. In the frame of the model, there are considered two the most important electron-phonon interactions. The equation for phonon Green function is deduced in the random phase approximation as a sum of diagrammatic ladder series of close loops of electronic Green functions. The renormalized phonon spectrum is presented for the Peierls model (with one molecule in an unit cell), and for the real model of the crystal (with two molecules in an unit cell). en_US
dc.language.iso en en_US
dc.rights Attribution-NonCommercial-NoDerivs 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/us/ *
dc.subject phonon spectrum en_US
dc.subject Peierls transition en_US
dc.subject polarization operator en_US
dc.subject quasi-one-dimensional crystals en_US
dc.subject organic materials en_US
dc.subject phonon Green function en_US
dc.title Effect of the peierls transition on the phonon spectrum in TTF-TCNQ crystals en_US
dc.type Article en_US


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