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The influence of the surface parameter changes onto the phonon states in ultrathin crystalline films

Authorized Users Only
2018
Authors
Šetrajčić, Jovan P.
Ilić, Dušan I.
Jaćimovski, Stevo
Article (Published version)
Metadata
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Abstract
In this paper, we have analytically investigated how the changes in boundary surface parameters influence the phonon dispersion law in ultrathin films of the simple cubic crystalline structure. Spectra of possible phonon states are analyzed using the method of two-time dependent Green's functions and for the diverse combination of boundary surface parameters, this problem was presented numerically and graphically. It turns out that for certain values and combinations of parameters, displacement of dispersion branches outside of bulk zone occurs, leading to the creation of localized phonon states. This fact is of great importance for the heat removal, electrical conductivity and superconducting properties of ultrathin films.
Keywords:
Phonons / Ultrathin films / Green's function / Boundary parameters
Source:
Physica a-statistical mechanics and its applications, 2018, 496, 434-445
Publisher:
  • Elsevier Science Bv, Amsterdam
Funding / projects:
  • Design and modeling of specific features of nanostructured samples (RS-171039)
  • Inovation of Forensic Methods and their Application (RS-34019)
  • Ministry of Science and Technological Development of the Republic of Srpska
  • Provincial Secretariat for High Education, Science and Technological Development of Vojvodina

DOI: 10.1016/j.physa.2017.12.138

ISSN: 0378-4371

WoS: 000426330900037

Scopus: 2-s2.0-85041489968
[ Google Scholar ]
3
3
URI
http://jakov.kpu.edu.rs/handle/123456789/836
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
Jakov
TY  - JOUR
AU  - Šetrajčić, Jovan P.
AU  - Ilić, Dušan I.
AU  - Jaćimovski, Stevo
PY  - 2018
UR  - http://jakov.kpu.edu.rs/handle/123456789/836
AB  - In this paper, we have analytically investigated how the changes in boundary surface parameters influence the phonon dispersion law in ultrathin films of the simple cubic crystalline structure. Spectra of possible phonon states are analyzed using the method of two-time dependent Green's functions and for the diverse combination of boundary surface parameters, this problem was presented numerically and graphically. It turns out that for certain values and combinations of parameters, displacement of dispersion branches outside of bulk zone occurs, leading to the creation of localized phonon states. This fact is of great importance for the heat removal, electrical conductivity and superconducting properties of ultrathin films.
PB  - Elsevier Science Bv, Amsterdam
T2  - Physica a-statistical mechanics and its applications
T1  - The influence of the surface parameter changes onto the phonon states in ultrathin crystalline films
VL  - 496
SP  - 434
EP  - 445
DO  - 10.1016/j.physa.2017.12.138
UR  - conv_1214
ER  - 
@article{
author = "Šetrajčić, Jovan P. and Ilić, Dušan I. and Jaćimovski, Stevo",
year = "2018",
abstract = "In this paper, we have analytically investigated how the changes in boundary surface parameters influence the phonon dispersion law in ultrathin films of the simple cubic crystalline structure. Spectra of possible phonon states are analyzed using the method of two-time dependent Green's functions and for the diverse combination of boundary surface parameters, this problem was presented numerically and graphically. It turns out that for certain values and combinations of parameters, displacement of dispersion branches outside of bulk zone occurs, leading to the creation of localized phonon states. This fact is of great importance for the heat removal, electrical conductivity and superconducting properties of ultrathin films.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Physica a-statistical mechanics and its applications",
title = "The influence of the surface parameter changes onto the phonon states in ultrathin crystalline films",
volume = "496",
pages = "434-445",
doi = "10.1016/j.physa.2017.12.138",
url = "conv_1214"
}
Šetrajčić, J. P., Ilić, D. I.,& Jaćimovski, S.. (2018). The influence of the surface parameter changes onto the phonon states in ultrathin crystalline films. in Physica a-statistical mechanics and its applications
Elsevier Science Bv, Amsterdam., 496, 434-445.
https://doi.org/10.1016/j.physa.2017.12.138
conv_1214
Šetrajčić JP, Ilić DI, Jaćimovski S. The influence of the surface parameter changes onto the phonon states in ultrathin crystalline films. in Physica a-statistical mechanics and its applications. 2018;496:434-445.
doi:10.1016/j.physa.2017.12.138
conv_1214 .
Šetrajčić, Jovan P., Ilić, Dušan I., Jaćimovski, Stevo, "The influence of the surface parameter changes onto the phonon states in ultrathin crystalline films" in Physica a-statistical mechanics and its applications, 496 (2018):434-445,
https://doi.org/10.1016/j.physa.2017.12.138 .,
conv_1214 .

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