Nanoscale potential distribution across multiquantum well structures: Kelvin probe force microscopy and secondary electron imaging

  • A. Schwarzman
  • , E. Grunbaum
  • , E. Strassburg
  • , E. Lepkifker
  • , A. Boag
  • , Y. Rosenwaks*
  • , Th Glatzel
  • , Z. Barkay
  • , M. Mazzer
  • , K. Barnham
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

Ultrahigh vacuum cross-sectional Kelvin probe force microscopy has been used to characterize In0.17 GaAsGaAs P0.06 multiquantum well structures, together with secondary electron microscopy. Individual 8 nm quantum wells were well resolved in both methods, and were found to be in a good agreement with numerical simulations of the work function profile. It is shown that the surface potential contrast in the Kelvin probe force microscopy measurements is greatly enhanced using deconvolution algorithms, and the reasons for the different contrast in the electron microscopy images are discussed.

Original languageEnglish
Article number084310
JournalJournal of Applied Physics
Volume98
Issue number8
DOIs
StatePublished - 15 Oct 2005

Funding

FundersFunder number
German Israeli Science Foundation
German-Israeli Foundation for Scientific Research and Development801∕03
Israel Science Foundation1118∕04, 224∕03

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