Otro
Two-dimensional electron states bound to an off-plane donor in a magnetic field
Registro en:
Journal of Physics-condensed Matter. Bristol: Iop Publishing Ltd, v. 22, n. 12, p. 8, 2010.
0953-8984
10.1088/0953-8984/22/12/125801
WOS:000275496600014
Autor
Bruno-Alfonso, A.
Candido, L.
Hai, G-Q
Resumen
The states of an electron confined in a two-dimensional (2D) plane and bound to an off-plane donor impurity center, in the presence of a magnetic field, are investigated. The energy levels of the ground state and the first three excited states are calculated variationally. The binding energy and the mean orbital radius of these states are obtained as a function of the donor center position and the magnetic field strength. The limiting cases are discussed for an in-plane donor impurity (i.e. a 2D hydrogen atom) as well as for the donor center far away from the 2D plane in strong magnetic fields, which corresponds to a 2D harmonic oscillator. Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)