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Carrier density saturation in a Ga0.25In0.75As/InP heterostructure

Publiceringsår: 2008
Språk: Engelska
Sidor: 1754-1756
Publikation/Tidskrift/Serie: Physica E: Low-dimensional Systems and Nanostructures
Volym: 40
Nummer: 5
Dokumenttyp: Artikel
Förlag: Elsevier Science B.V.


We observe a strong saturation of the carrier density in the quantum well of a Ga0.25In0.75As/InP MISFET at positive gate voltages. Using a self-consistent Schrodinger/Poisson solver, we model the band structure and find that the saturation is caused by the population of charge states between the gate and the quantum well. We discuss the impact of these charge states on the transport properties, and present a fabrication method that avoids parallel conduction in this heterostructure. (C) 2007 Elsevier B.V. All rights reserved.



  • Condensed Matter Physics
  • saturation
  • carrier density
  • GaInAs
  • InP
  • band structure


  • ISSN: 1386-9477

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