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Properties of self-assembled Bi nanolines on InAs(100) studied by core-level and valence-band photoemission, and first-principles calculations

Författare:
  • M. Ahola-Tuomi
  • M. P. J. Punkkinen
  • P. Laukkanen
  • M. Kuzmin
  • J. Lang
  • Karina Schulte
  • Annette Pietzsch
  • R. E. Perala
  • N. Rasanen
  • I. J. Vayrynen
Publiceringsår: 2011
Språk: Engelska
Publikation/Tidskrift/Serie: Physical Review B
Volym: 83
Nummer: 24
Dokumenttyp: Artikel
Förlag: Amer Physical Soc

Sammanfattning

We have studied self-assembled bismuth (Bi) nanolines on the Bi-terminated InAs(100) surface by core-level and valence-band photoelectron spectroscopy, and ab initio first-principles calculations. A structural model for this intriguing surface is suggested based on the comparison of the measured and calculated core-level shifts. Also, the atomic origins for the core-level shifts are proposed based on the calculations. A clear peak related to this surface was observed in the valence band 0.34 eV below the Fermi level, which can be used as a "fingerprint" of a well-ordered Bi/InAs(100) nanoline surface.

Disputation

Nyckelord

  • Physics and Astronomy

Övriga

Published
Yes
  • ISSN: 1098-0121

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