Phonon Contribution in Thermodynamics of Nano-Crystalline Films and Wires

被引：12

作者：

Setrajcic, J. P. ^{[1
,6
]}

Mirjanic, D. Lj ^{[2
]}

Vucenovic, S. M. ^{[2
]}

Ilic, D. I. ^{[3
]}

Markoski, B. ^{[3
]}

Jacimovski, S. K. ^{[4
]}

Sajfert, V. D. ^{[5
]}

Zoric, V. M. ^{[1
]}

机构：

[1] Univ Novi Sad, Fac Sci, Dept Phys, Novi Sad 21000, Vojvodina, Serbia

[2] Univ Banja Luka, Fac Med, Banja Luka, Bosnia & Herceg

[3] Univ Novi Sad, Fac Tech Sci, Vojvodina, Serbia

[4] Police Acad, Belgrade, Serbia

[5] Univ Novi Sad, Tech Fac M Pupin, Vojvodina, Serbia

[6] Acad Sci & Arts, Banja Luka, Bosnia & Herceg

来源：

ACTA PHYSICA POLONICA A | 2009年 / 115卷 / 04期

关键词：

MECHANICAL OSCILLATIONS; SUPERLATTICES;

D O I：

10.12693/APhysPolA.115.778

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 4 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.

引用

页码：778 / 782

页数：5

共 12 条

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