Neutral and positively charged excitons in narrow quantum ring

Journal Article · Thu May 15 00:00:00 EDT 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4878287· OSTI ID:22280327

Porras Monroy, L. C.; Rodríguez-Prada, F. A.; Mikhailov, I. D. ^[1]

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1. Escuela de Física, Universidad Industrial de Santander, A. A. 678, Bucaramanga (Colombia)

We study theoretically quantized states of a neutral and a positively charged exciton (trion X{sup +}) confined in a heterostructure with the ring-like geometry. In order to assess the experimentally relevant domain of parameters, we adopt a simple model of a narrow ring when 3D wave equations for the neutral and positively charged excitons can be separated. By using the Fourier series method, we have calculated the energy spectra of excitons complexes in a quantum ring as a function of the electron-to-hole mass ratio, the ring radius, and the magnetic field strength. The quantum-size effect and the size-dependent magnetic oscillations of energy levels of excitons' complexes spectra have been revealed.

• OSTI ID: 22280327
• Journal Information: AIP Conference Proceedings, Vol. 1598, Issue 1; Conference: LDSD 2011: 7. international conference on low dimensional structures and devices, Telchac (Mexico), 22-27 May 2011; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ELECTRONS
ENERGY LEVELS
ENERGY SPECTRA
EXCITONS
HETEROJUNCTIONS
HOLES
MAGNETIC FIELDS
MASS
NANOSTRUCTURES
OSCILLATIONS
WAVE EQUATIONS