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Direct atomic scale imaging of III-V nanowire surfaces.

Authors
  • Hilner, Emelie
  • Håkanson, Ulf
  • Fröberg, Linus E
  • Karlsson, Martin
  • Kratzer, Peter
  • Lundgren, Edvin
  • Samuelson, Lars
  • Mikkelsen, Anders
Type
Published Article
Journal
Nano letters
Publication Date
Nov 01, 2008
Volume
8
Issue
11
Pages
3978–3982
Identifiers
DOI: 10.1021/nl802500d
PMID: 18850752
Source
Medline
License
Unknown

Abstract

We have succeeded in direct atomic scale imaging of the exterior surfaces of III-V nanowires by scanning tunneling microscopy (STM). By using atomic hydrogen, we expose the crystalline surfaces of InAs nanowires with regular InP segments in vacuum while retaining the wire morphology. We show images with atomic resolution of the two major types of InAs wurtzite nanowire surface facets and scanning tunneling spectroscopy (STS) data. Ab initio calculations of the lowest energy surface structures and simulated STM images, agree very well with experiments.

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