Peierls transition in organic crystals of TTT2I3 for different values of carrier concentration
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2023-08-24 11:46
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ANDRONIC, Silvia, BALMUŞ, Ion, KASIYAN, Anatolie. Peierls transition in organic crystals of TTT2I3 for different values of carrier concentration. In: Telecommunications, Electronics and Informatics, Ed. 6, 24-27 mai 2018, Chișinău. Chișinău, Republica Moldova: 2018, Ed. 6, pp. 77-79. ISBN 978-9975-45-540-4.
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Telecommunications, Electronics and Informatics
Ed. 6, 2018
Conferința "Telecommunications, Electronics and Informatics"
6, Chișinău, Moldova, 24-27 mai 2018

Peierls transition in organic crystals of TTT2I3 for different values of carrier concentration


Pag. 77-79

Andronic Silvia, Balmuş Ion, Kasiyan Anatolie
 
Technical University of Moldova
 
Disponibil în IBN: 29 mai 2018


Rezumat

Peierls transition in quasi-one-dimensional organic crystals of tetrathiotetracene-iodide,  TTT2I3, is investigated in 3D approximation. For a more complete description of the crystal model, two the most important hole-phonon interactions are considered. The first is similar to that of deformation potential and the second one is of polaron type. The scattering on defects is also considered. The renormalized phonon spectrum is calculated in the random phase approximation for different temperatures applying the method of retarded Green functions. The transition behavior is investigated for different values of carrier concentration that is determined by the dimensionless Fermi momentum, kF. In all cases the critical temperature of the transition is determined.

Cuvinte-cheie
Peierls transition, organic crystals, Carrier concentration, Peierls critical temperature,

3D physical model of TTT2I3