Thermodynamic properties of graphene using the static fluctuation approximation (SFA)
| Autor: | M. K. Al-Sugheir, Mustafa M. Hawamdeh, Humam B. Ghassib, A. S. Sandouqa |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
Internal energy Particle number Specific heat Graphene General Physics and Astronomy 02 engineering and technology Statistical mechanics 021001 nanoscience & nanotechnology 01 natural sciences Power law law.invention Entropy (classical thermodynamics) law Quantum mechanics 0103 physical sciences Statistical physics 010306 general physics 0210 nano-technology |
| Zdroj: | Canadian Journal of Physics. 95:211-219 |
| ISSN: | 1208-6045 0008-4204 |
| DOI: | 10.1139/cjp-2016-0310 |
| Popis: | The thermodynamic properties of two-dimensional graphene nanosystems are investigated using the static fluctuation approximation (SFA). These properties are analyzed using both extensive and nonextensive statistical mechanics. It is found that these properties are less sensitive to temperature when using nonextensive — in contrast to extensive — statistical mechanics. It is also noted that the mean internal energy and the specific heat behave as a power law, Tα, at T < 8 eV; whereas they go to the classical limit for the two-dimensional ideal gas at T > 8 eV. The results are presented in a set of figures and one table. The roles played by the number of particles and the entropy parameter q are underlined. Whenever possible, comparisons are made to previous studies. It is concluded that Boltzmann–Gibbs statistics are not valid for some cases, and that SFA results are in good agreement with those obtained within other formalisms. |
| Databáze: | OpenAIRE |
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