A microscopic study of spin-polarized 6Li atoms in highly elongated traps using the static fluctuation approximation (SFA)
| Autor: | M. K. Al-Sugheir, Hyam Abdallah Al-Khzon |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Fermi energy 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Molecular physics Heat capacity Electronic Optical and Magnetic Materials Magnetic field Interaction potential 0103 physical sciences Electrical and Electronic Engineering 0210 nano-technology Saturation (magnetic) |
| Zdroj: | Physica B: Condensed Matter. 571:18-25 |
| ISSN: | 0921-4526 |
| Popis: | The thermodynamic properties of spin-polarized 6Li atoms in highly elongated traps are studied within the Static Fluctuation Approximation. The chemical potential μ, energy per particle U/N, specific heat capacity CV/N, and the effective magnetic field h are determined as a function of temperature and potential strength (magnetic field B). We used the contact potential as the two-body interaction potential. For a repulsive interaction μ and U increase parabolically with B, while for an attractive interaction both increase monotonically with B until saturation at B larger than the resonance field. The effect of the two-body interaction on CV appears at temperatures comparable with the Fermi temperature. μ and U/N of the system were studied of different channels; It is found that these quantities are channel dependent, and the behavior of h at low temperature depends on the potential strength. Our results are consistent with that obtained by the mean-field Bogoliubov–de Gennes method. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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