Phonon-Induced Thermodynamic Properties of Ultra-narrow Wires
Abstract
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.
Source:
Acta physica polonica A, 2018, 133, 1, 57-62Publisher:
- Polish Acad Sciences Inst Physics, Warsaw
Funding / projects:
- Design and modeling of specific features of nanostructured samples (RS-171039)
- Inovation of Forensic Methods and their Application (RS-34019)
- Ministry of Science and Technological Development of the Republic of Srpska
- Provincial Secretariat for High Education, Science and Technological Development of Vojvodina
DOI: 10.12693/APhysPolA.133.57
ISSN: 0587-4246