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Anomalous bismuth-stabilized (2x1) reconstructions on GaAs(100) and InP(100) surfaces

  • P Laukkanen
  • M P J Punkkinen
  • H-P Komsa
  • M Ahola-Tuomi
  • K Kokko
  • M Kuzmin
  • Johan Adell
  • Janusz Sadowski (Dr)
  • R E Perala
  • M Ropo
  • T T Rantala
  • I J Vayrynen
  • M Pessa
  • L Vitos
  • J Kollar
  • S Mirbt
  • B Johansson
Publiceringsår: 2008
Språk: Engelska
Publikation/Tidskrift/Serie: Physical Review Letters
Volym: 100
Nummer: 8
Dokumenttyp: Artikel
Förlag: American Physical Society


First-principles phase diagrams of bismuth-stabilized GaAs- and InP(100) surfaces demonstrate for the first time the presence of anomalous (2 x 1) reconstructions, which disobey the common electron counting principle. Combining these theoretical results with our scanning-tunneling-microscopy and photoemission measurements, we identify novel (2 x 1) surface structures, which are composed of symmetric Bi-Bi and asymmetric mixed Bi-As and Bi-P dimers, and find that they are stabilized by stress relief and pseudogap formation.



  • Physics and Astronomy


  • ISSN: 0031-9007

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