Hydrogenic impurity effect on optical properties of Wannier-Mott exciton confined in a spherical quantum dot with Kratzer potential under magnetic field
Document title: Hydrogenic impurity effect on optical properties of Wannier-Mott exciton confined in a spherical quantum dot with Kratzer potential under magnetic field
Journal: Revista mexicana de física
Database: PERIÓDICA
System number: 000454070
ISSN: 0035-001X
Authors: 1
3
4
5
Institutions: 1University of Delhi, Department of Physics and Astrophysics, Delhi. India
2University of Delhi, Kalindi College, Delhi. India
3University of Delhi, Rajdhani College, Delhi. India
4University of Delhi, Department of Mathematics, Delhi. India
5University of Delhi, Swami Shraddhanand College, Delhi. India
Year:
Season: Sep-Oct
Volumen: 68
Number: 5
Country: México
Language: Inglés
Document type: Artículo
Approach: Analítico, teórico
English abstract Confinement effects of Kratzer potential on a Wannier-Mott Exciton(W-M) are studied in a spherical quantum dot(QD) in the presence of a static magnetic field. Time independent Schrödinger equation is solved numerically to obtain the energy states. The excitonic transitions so realized have been used to explore the non-linear optical properties that are important for optical characterization of materials such as the optical absorption coefficients (ACs) and refractive index changes (RICs). Impact of magnetic field, strength of the laser field and transition parameters using familiar compact density matrix approach are also analyzed. It has been observed that optical properties get radically modified under confinement effects. Also, the shift of degeneracy of different excitonic energy levels with the magnetic field in confinement potential has been reported for the first time for W-M exciton in the spherical quantum dot, the study that may have crucial input to the literature and myriad of practical implications
Disciplines: Física y astronomía
Keyword: Optica,
Excitón de Wannier-Mott,
Punto cuántico,
Campo magnético,
Coeficientes de absorción óptica,
Indice de refracción
Keyword: Optics,
Wannier-Mott exciton,
Quantum dot,
Magnetic field,
Optical absorption coefficients,
Refractive index
Full text: Texto completo (Ver HTML) Texto completo (Ver PDF)