ABSORPTION SPECTRUM OF AN EXCITON IN ANInxGa1 - xAs/GaAsQUANTUM DOT IN THE PRESENCE OF A MAGNETIC FIELD

J. C. Rodríguez (), K. Fonseca and R. R. Rey-González
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J. C. Rodríguez: Departamento de Física, Universidad Nacional de Colombia, Bogotá, Colombia
K. Fonseca: Departamento de Física, Universidad Nacional de Colombia, Bogotá, Colombia
R. R. Rey-González: Departamento de Física, Universidad Nacional de Colombia, Bogotá, Colombia

Surface Review and Letters (SRL), 2002, vol. 09, issue 05n06, 1785-1789

Abstract: We calculate the absorption spectrum of a single exciton, confined in anInxGa1 - xAs/GaAsdisk-shaped quantum dot, as a function of the strength of an applied magnetic field. Exciton eigenstates are obtained by numerical diagonalization of the Hamiltonian, within the effective mass approximation. A correction in the expression of the Coulomb interaction matrix elements is verified.

Date: 2002
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DOI: 10.1142/S0218625X02004414

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