Phonon Contribution in Thermodynamics οf Nano-Crystalline Films and Wires

• Authors: J. Šetrajčić , D. Mirjanić , S. Vučenović , D. Ilić , B. Markoski , S. Jaćimovski , V. Sajfert , V. Zorić
• Languages of publication: EN

Abstracts

EN

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.

Keywords

EN

63.20.-e; 65.40.Ba; 67.25.dp; 68.60.-p; 68.65.La

Discipline

• 68.65.La: Quantum wires (patterned in quantum wells)
• 67.25.dp: Films
• 68.60.-p: Physical properties of thin films, nonelectronic
• 63.20.-e: Phonons in crystal lattices(for phonons in superconductors, see 74.25.Kc; see also 43.35.Gk Phonons in crystal lattice, quantum acoustics—in Acoustics Appendix)
• 65.40.Ba: Heat capacity(for specific heat of magnetic materials, see 75.40.-s)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 115
• Issue: 4
• Pages: 778-782

Dates

published

2009-04

Contributors

author

J. Šetrajčić

• Department of Physics, Faculty of Sciences, University of Novi Sad, Trg D. Obradovića 4, 21000 Novi Sad, Vojvodina, Serbia
• Academy of Sciences and Arts, Banja Luka, Republic of Srpska, BIH

author

D. Mirjanić

• Faculty of Medicine, University of Banja Luka, Banja Luka, Republic of Srpska, BIH

author

S. Vučenović

• Faculty of Medicine, University of Banja Luka, Banja Luka, Republic of Srpska, BIH

author

D. Ilić

• Faculty of Technical Sciences, University of Novi Sad, Novi Sad, Vojvodina, Serbia

author

B. Markoski

• Faculty of Technical Sciences, University of Novi Sad, Novi Sad, Vojvodina, Serbia

author

S. Jaćimovski

• Police Academy, Belgrade, Serbia

author

V. Sajfert

• Technical Faculty 'M. Pupin', University of Novi Sad, Novi Sad, Vojvodina, Serbia

author

V. Zorić

• Department of Physics, Faculty of Sciences, University of Novi Sad, Trg D. Obradovića 4, 21000 Novi Sad, Vojvodina, Serbia

References

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• 13. S.K. Jaćimovski, B.S. Tošić, J.P. Šetrajčić, V.M. Zorić, V.D. Sajfert, D.I. Ilić, Int. J. Mod. Phys. B 21, 917 (2007)

Identifiers

DOI

10.12693/APhysPolA.115.778