Phonon contribution to heat capacitance of nanolayered crystalline structures
Апстракт
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.
Кључне речи:
Ultrathin film / superlattice / phonons / thermodynamics / conductivityИзвор:
Modern physics letters B, 2015, 29, 4Издавач:
- World Scientific Publ Co Pte Ltd, Singapore
Финансирање / пројекти:
- Дизајнирање и моделовање специфичних особина наноструктурних узорака (RS-MESTD-Basic Research (BR or ON)-171039)
- Иновирање форензичких метода и њихова примена (RS-MESTD-Technological Development (TD or TR)-34019)
- Ministry of Science and Technological Development of the Republic of Srpska
- Provincial Secretariat for High Education, Science and Technological Development of Vojvodina
DOI: 10.1142/S0217984915500086
ISSN: 0217-9849
WoS: 000350758300006
Scopus: 2-s2.0-84928383028
Институција/група
JakovTY - 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", 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. in 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. in Modern physics letters B. 2015;29(4). doi:10.1142/S0217984915500086 .
Šetrajčić, Jovan P., Jaćimovski, Stevo, Sajfert, Vjekoslav D., "Phonon contribution to heat capacitance of nanolayered crystalline structures" in Modern physics letters B, 29, no. 4 (2015), https://doi.org/10.1142/S0217984915500086 . .