Autor: Ilić, J. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Phonon-Induced Thermodynamic Properties of Ultra-narrow Wires
Autorzy:: Ilić, D.
Šetrajčić, J.
Jaćimovski, S.
Powiązania:: https://bibliotekanauki.pl/articles/1029824.pdf
Data publikacji:: 2018-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: Phonons
ultra-narrow wire
the Green function
thermodynamics
specific heat
Opis:: In this paper, we investigated the influence of size effect on thermodynamic properties of ultra-narrow wires with a simple cubic lattice, by means of two-time dependent Green functions method, adjusted to confined crystalline structures. Poles of Green functions, which defining phonon spectra, are found by solving the secular equation. For different boundary parameters, this problem is presented graphically. The temperature behavior of ultra-narrow wire thermal capacitance is compared to that of bulk structures. It turned out that in low-temperature region thermal capacitance of the ultra-narrow wire is notably lower than in the corresponding bulk sample. How this fact reflects the thermal, conducting and superconducting properties of materials, is discussed in the conclusion.
Źródło:: Acta Physica Polonica A; 2018, 133, 1; 57-62
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Phonon Contribution in Thermodynamics οf Nano-Crystalline Films and Wires
Autorzy:: Šetrajčić, J.
Mirjanić, D.
Vučenović, S.
Ilić, D.
Markoski, B.
Jaćimovski, S.
Sajfert, V.
Zorić, V.
Powiązania:: https://bibliotekanauki.pl/articles/1808050.pdf
Data publikacji:: 2009-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 63.20.-e
65.40.Ba
67.25.dp
68.60.-p
68.65.La
Opis:: Spectra of possible phonon states, as well as thermodynamic characteristics of nanocrystals (ultrathin film and quantum wire) of simple cubic crystalline structure are analyzed in this paper, using the method of two-time dependent Green functions. From energy spectra and internal energy of the system the thermal capacitance of these structures in low temperature region is found. The temperature behavior of specific heat is compared to that of corresponding bulk structure. It is shown that at extremely low temperatures thermal capacitance of quantum wire is considerably lower than the thermal capacitance of film as well as the bulk sample. Consequences of this fact are discussed in detail and its influence to thermodynamic properties of materials is estimated.
Źródło:: Acta Physica Polonica A; 2009, 115, 4; 778-782
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Informacja