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Master's Dissertation
DOI
https://doi.org/10.11606/D.54.1990.tde-13032014-102103
Document
Author
Full name
Sebastiao Rocha Aladim Neto
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 1990
Supervisor
Committee
Marques, Gilmar Eugenio (President)
Basmaji, Pierre
Basso, Heitor Cury
Title in Portuguese
Estrutura eletrônica de poços quânticos com dopagem seletiva
Keywords in Portuguese
Dopagem seletiva
Estrutura eletrônica
Método k.p
Abstract in Portuguese
Neste trabalho realizamos o cálculo da estrutura eletrônica de poços quânticos com dopagem seletiva, usando um método k-p com 8 bandas. Utilizamos um processo de bloco-diagonalização para reduzir o Hamiltoniano 8x8 a dois blocos 4x4 a fim de diminuir o esforço computacional. Calculamos o efeito do potencial auto-consistente sobre a massa dos portadores e sobre as densidades de estado. Os resultados obtidos para as energias de excitação de uma partícula estão em pleno acordo com os dados obtidos em experimentos de absorção óptica intra-banda (espalhamento Raman ressonante)
Title in English
Electronic structure of quantum well with selective doping
Keywords in English
Electronic structures
K.p method
Selective doping
Abstract in English
In this work we developed a calculation of the electronic structure of modulation doped quantum wells using a k-p method with 8 bands. We have used a procedure which block-diagonalizes this 8x8 Hamiltonian into two 4x4 blocks to reduce the computacional effort. We have calculated the effect of the self-consistent potential on the effective mass of carriers and on the densities of states. The results obtained for one-particle excitations are in complete agreement with intra-band optic absorptions experiments (resonant Raman scattering)
 
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SebastiaoNetoM.pdf (3.08 Mbytes)
Publishing Date
2014-03-17
 
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