Interface roughness effects in Gaussian superlattices

Francesco Banfi, Vittorio Bellani, Ignacio Gómez, Enrique Diez, Francisco Domínguez-Adame

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

5 Citazioni (Scopus)

Abstract

We investigate the effect of unintentional disorder on the pass-band capabilities of a GaAs-Al(x)Gal(1-x)As superlattice with Gaussian modulated Al mole fraction. We prove that if fluctuations of vertical disorder can be kept below two monolayers the pass-band filter capabilities are not severely degraded. In addition Al fluctuation as encountered in typical molecular beam epitaxy growth conditions does not degrade the filter capabilities of the Gaussian superlattice. We introduce a new model to deal with lateral disorder and prove that in a molecular beam epitaxial growth process lateral disorder effects are negligible as compared with the vertical disorder ones.
Lingua originaleEnglish
pagine (da-a)304-309
Numero di pagine6
RivistaSemiconductor Science and Technology
Volume16
DOI
Stato di pubblicazionePubblicato - 2001

Keywords

  • disorder
  • quantum interference devices
  • quantum transport
  • superlattice

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