Effect of magnetic field on quantum state energies of an electron confined in the core of a double walled carbon nanotube
| Autor: | Khurshed A. Shah, Bashir Mohi Ud Din Bhat |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics
Core charge 02 engineering and technology Radius Electron 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences WKB approximation Electronic Optical and Magnetic Materials Magnetic field Carbon nanotube quantum dot Core (optical fiber) Excited state 0103 physical sciences Electrical and Electronic Engineering Atomic physics 010306 general physics 0210 nano-technology |
| Zdroj: | Physica B: Condensed Matter. 498:55-58 |
| ISSN: | 0921-4526 |
| DOI: | 10.1016/j.physb.2016.06.024 |
| Popis: | In this paper we report the effect of external magnetic field and core radius on the excited quantum state energies of an electron confined in the core of a double walled carbon nanotube. The goal is accomplished by using Wentzel–Kramers–Brillioun (WKB) approximation method within the effective mass approximation and confinement potential. All numerical analysis were carried out in a strong confinement regime. The results show that the electron energy increases with the increase in external magnetic field at a given core radii. The electron energy is also found to increase as the core radius of the CNT decreases and for core radius a > 5 n m the energy becomes almost zero. The effect of magnetic field on the excited state energies of the confined electron is more evident for smaller core radius a [1] . |
| Databáze: | OpenAIRE |
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