The paper presents the innovated method of two-time dependent Green's functions applied to the bounded and translational perturbed systems. Film-structures and super-lattices were analyzed by employing the phonon spectra for the calculation of relevant thermodynamic characteristics. Free energy and the internal energy of the system were found as well as the temperature behavior of layered structures. Heat capacitances of these nanostructures were compared to bulk ones. It was shown that heat capacitances of nanolayered structures in low-temperature region were higher than the same quantities of the corresponding bulk sample. In the middle and the highest temperature region, temperature behavior was inverse: heat capacitance of layered structures was lower than of the corresponding bulk ones. The consequences were discussed with relation to the ( super) conductive properties of nanomaterials.
Keywords:
Ultrathin film / superlattice / phonons / thermodynamics / conductivity
TY - JOUR
AU - Šetrajčić, Jovan P.
AU - Jaćimovski, Stevo
AU - Sajfert, Vjekoslav D.
PY - 2015
UR - http://jakov.kpu.edu.rs/handle/123456789/665
AB - The paper presents the innovated method of two-time dependent Green's functions applied to the bounded and translational perturbed systems. Film-structures and super-lattices were analyzed by employing the phonon spectra for the calculation of relevant thermodynamic characteristics. Free energy and the internal energy of the system were found as well as the temperature behavior of layered structures. Heat capacitances of these nanostructures were compared to bulk ones. It was shown that heat capacitances of nanolayered structures in low-temperature region were higher than the same quantities of the corresponding bulk sample. In the middle and the highest temperature region, temperature behavior was inverse: heat capacitance of layered structures was lower than of the corresponding bulk ones. The consequences were discussed with relation to the ( super) conductive properties of nanomaterials.
PB - World Scientific Publ Co Pte Ltd, Singapore
T2 - Modern physics letters B
T1 - Phonon contribution to heat capacitance of nanolayered crystalline structures
VL - 29
IS - 4
DO - 10.1142/S0217984915500086
ER -
@article{
author = "Šetrajčić, Jovan P. and Jaćimovski, Stevo and Sajfert, Vjekoslav D.",
year = "2015",
url = "http://jakov.kpu.edu.rs/handle/123456789/665",
abstract = "The paper presents the innovated method of two-time dependent Green's functions applied to the bounded and translational perturbed systems. Film-structures and super-lattices were analyzed by employing the phonon spectra for the calculation of relevant thermodynamic characteristics. Free energy and the internal energy of the system were found as well as the temperature behavior of layered structures. Heat capacitances of these nanostructures were compared to bulk ones. It was shown that heat capacitances of nanolayered structures in low-temperature region were higher than the same quantities of the corresponding bulk sample. In the middle and the highest temperature region, temperature behavior was inverse: heat capacitance of layered structures was lower than of the corresponding bulk ones. The consequences were discussed with relation to the ( super) conductive properties of nanomaterials.",
publisher = "World Scientific Publ Co Pte Ltd, Singapore",
journal = "Modern physics letters B",
title = "Phonon contribution to heat capacitance of nanolayered crystalline structures",
volume = "29",
number = "4",
doi = "10.1142/S0217984915500086"
}
Šetrajčić, J. P., Jaćimovski, S.,& Sajfert, V. D. (2015). Phonon contribution to heat capacitance of nanolayered crystalline structures.
Modern physics letters B
World Scientific Publ Co Pte Ltd, Singapore., 29(4).
https://doi.org/10.1142/S0217984915500086
Šetrajčić JP, Jaćimovski S, Sajfert VD. Phonon contribution to heat capacitance of nanolayered crystalline structures. Modern physics letters B. 2015;29(4)
Šetrajčić Jovan P., Jaćimovski Stevo, Sajfert Vjekoslav D., "Phonon contribution to heat capacitance of nanolayered crystalline structures" Modern physics letters B, 29, no. 4 (2015),
https://doi.org/10.1142/S0217984915500086 .
