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Peierls structural transition of TTF-TCNQ organic crystals in the 2D physical model

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dc.contributor.author ANDRONIC, Silvia
dc.contributor.author BALMUS, Ion
dc.contributor.author CASIAN, Anatolie
dc.date.accessioned 2019-10-18T10:28:55Z
dc.date.available 2019-10-18T10:28:55Z
dc.date.issued 2014
dc.identifier.citation ANDRONIC, Silvia , BALMUS, Ion , CASIAN, Anatolie. Peierls structural transition of TTF-TCNQ organic crystals in the 2D physical model. In: Microelectronics and Computer Science: proc. of the 8th intern. conf., October 22-25, 2014. Chişinău, 2014, pp. 16-19. ISBN 978-9975-45-329-5. en_US
dc.identifier.isbn 978-9975-45-329-5
dc.identifier.uri http://repository.utm.md/handle/5014/4834
dc.description.abstract Many quasi-one-dimensional (Q1D) organic crystals, known as synthetic metals at room temperature, become insulators when the temperature decreases, due to the Peierls transition. In the last years, it was demonstrated theoretically, that after the optimization of parameters, the organic crystals of TTF-TCNQ (tetrathiofulvalene-tetracyanoquinodimethane) are good candidates for thermoelectric materials. Peierls transition in Q1D crystals of TTF-TCNQ type is studied in a 2D physical model of the crystal. 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 polarization operator as a function of temperature is calculated for different values of the parameter δ, where δ is the increase of the Fermi momentum, kF , that is determined by the increase of carrier concentration. The Peierls critical temperature Tp was determined for different values of δ. en_US
dc.language.iso en en_US
dc.publisher Tehnica UTM 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 peierls transition en_US
dc.subject tetrathiofulvalene-tetracyanoquinodimethane en_US
dc.subject polarization operator en_US
dc.subject phonon Green function en_US
dc.title Peierls structural transition of TTF-TCNQ organic crystals in the 2D physical model en_US
dc.type Article en_US


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