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Correlated development of a (2 x 2) reconstruction and a charge accumulation layer on the InAs(111)-Bi surface

Författare:
Publiceringsår: 2011
Språk: Engelska
Sidor: 12-17
Publikation/Tidskrift/Serie: Surface Science
Volym: 605
Nummer: 1-2
Dokumenttyp: Artikel
Förlag: Elsevier Science BV

Sammanfattning

We have studied the formation of a Bi-induced (2 x 2) reconstruction on the InAs(111)B surface. In connection to the development of the (2 x 2) reconstruction, a two dimensional charge accumulation layer located at the bottom of the InAs conduction band appears as seen through a photoemission structure at the Fermi level. Not well ordered Bi layers do not induce a charge accumulation. The Bi-induced reconstruction reduces the polarization of the pristine surface and changes the initial charge distribution. InAsBi alloying occurs below the surface where Bi acts as charge donor leading to the charge accumulation layer. (C) 2010 Elsevier B.V. All rights reserved.

Disputation

Nyckelord

  • Physics and Astronomy
  • Adatoms
  • Indium arsenide
  • Bismuth
  • Photoemission
  • 2 DEG

Övriga

Published
Yes
  • ISSN: 0039-6028

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