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Master's Dissertation
DOI
10.11606/D.43.1975.tde-09102014-115032
Document
Author
Full name
Mario Jose de Oliveira
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 1975
Supervisor
Title in Portuguese
Uma tentativa de melhoria da convergência do método APW convencional
Keywords in Portuguese
Física da matéria condensada
Abstract in Portuguese
Neste trabalho fizemos uma tentativa para melhorar a convergência do método APW convencional por meio de um parâmetro introduzido através de um principio variacional generalizado. Discutimos algumas consequências da expressão variacional estabelecida e fazemos a aplicação no modelo unidimensional Kroning - Penney. Estabelecemos certos critérios para a escolha do parâmetro que fornece a melhor convergência. Concluímos que a melhor escolha do parâmetro é aquele correspondente ao método APW convencional.
Title in English
An attempt to improve the convergence of the conventional APW method
Keywords in English
Condensed mather
Abstract in English
In this work a variational parameter is introduced in the conventional APW method in order to improve it´s convergence. We discuss some consequences of the variational expression and also estabilish a criteria for the choice of the parametrer wich furnishes the best convergence. After making a test with the one dimensional Kroning - Penney model we conclude that the best choice among the possible values of the parameter corresponds to the conventional APW method.
 
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OLIVEIRAmarioJOSE.pdf (1.82 Mbytes)
Publishing Date
2014-10-09
 
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