Phonon hardening due to the small-polaron effect
Apstrakt
The influence of the small-polaron effect on the vibrational properties of the strongly coupled electron-phonon system is investigated. It was found that polaron-phonon interaction may cause a noticeable renormalization of the phonon spectra. These changes may be observed by the measurements of the speed of sound for which a very specific dependence on temperature, values of coupling constant and adiabatic parameter is expected. We also found that the rise of the small-polaron effective mass as a function of the coupling constant should be considerably moderated than that anticipated without taking into account the modification of the vibrational spectra. (C) 2004 Elsevier B.V. All rights reserved.
Ključne reči:
polaron / phonon hardening / modification of speed of soundIzvor:
Physica B: Condensed Matter, 2005, 355, 1-4, 417-426
DOI: 10.1016/j.physb.2004.11.070
ISSN: 0921-4526
WoS: 000226733300054
Scopus: 2-s2.0-11444268730
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Ivić, Zoran AU - Zeković, Slobodan AU - Čevizović, Dalibor AU - Kostić, Dragan PY - 2005 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2851 AB - The influence of the small-polaron effect on the vibrational properties of the strongly coupled electron-phonon system is investigated. It was found that polaron-phonon interaction may cause a noticeable renormalization of the phonon spectra. These changes may be observed by the measurements of the speed of sound for which a very specific dependence on temperature, values of coupling constant and adiabatic parameter is expected. We also found that the rise of the small-polaron effective mass as a function of the coupling constant should be considerably moderated than that anticipated without taking into account the modification of the vibrational spectra. (C) 2004 Elsevier B.V. All rights reserved. T2 - Physica B: Condensed Matter T1 - Phonon hardening due to the small-polaron effect VL - 355 IS - 1-4 SP - 417 EP - 426 DO - 10.1016/j.physb.2004.11.070 ER -
@article{ author = "Ivić, Zoran and Zeković, Slobodan and Čevizović, Dalibor and Kostić, Dragan", year = "2005", abstract = "The influence of the small-polaron effect on the vibrational properties of the strongly coupled electron-phonon system is investigated. It was found that polaron-phonon interaction may cause a noticeable renormalization of the phonon spectra. These changes may be observed by the measurements of the speed of sound for which a very specific dependence on temperature, values of coupling constant and adiabatic parameter is expected. We also found that the rise of the small-polaron effective mass as a function of the coupling constant should be considerably moderated than that anticipated without taking into account the modification of the vibrational spectra. (C) 2004 Elsevier B.V. All rights reserved.", journal = "Physica B: Condensed Matter", title = "Phonon hardening due to the small-polaron effect", volume = "355", number = "1-4", pages = "417-426", doi = "10.1016/j.physb.2004.11.070" }
Ivić, Z., Zeković, S., Čevizović, D.,& Kostić, D.. (2005). Phonon hardening due to the small-polaron effect. in Physica B: Condensed Matter, 355(1-4), 417-426. https://doi.org/10.1016/j.physb.2004.11.070
Ivić Z, Zeković S, Čevizović D, Kostić D. Phonon hardening due to the small-polaron effect. in Physica B: Condensed Matter. 2005;355(1-4):417-426. doi:10.1016/j.physb.2004.11.070 .
Ivić, Zoran, Zeković, Slobodan, Čevizović, Dalibor, Kostić, Dragan, "Phonon hardening due to the small-polaron effect" in Physica B: Condensed Matter, 355, no. 1-4 (2005):417-426, https://doi.org/10.1016/j.physb.2004.11.070 . .