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|Type:||Artigo de periódico|
|Title:||INFRARED TRANSITIONS BETWEEN HYDROGENIC STATES IN CYLINDRICAL GAAS-(GA,AL)AS QUANTUM-WELL WIRES|
|Abstract:||Results for the binding and infrared transition energies associated with the ground and first few excited states of a hydrogenic-donor impurity in a cylindrical GaAs-Ga1-xAlxAs quantum-well wire are presented. A variational approach for the trial envelope wave functions corresponding to each donor state is used within the effective-mass approximation. Results are obtained for several wire radii in the case of donors located at the axis of the quantum-well wire. We find that the impurity states 2p(x) (2p(y)) and 3p(x) (3p(y)) are not bounded when the wire radius is sufficiently small, a behavior similar to the one found for impurities in quantum-well heterostructures.|
|Editor:||American Physical Soc|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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