Title: Low-Temperature Scanning Tunneling Microscopy of Ring-Like Surface Electronic Structures Around Co Islands on InAs(110) Surfaces
Authors: Muzychenko, D. A ×
Schouteden, Koen
Savinov, S. V
Maslova, N. S
Panov, V. I
Van Haesendonck, Christian #
Issue Date: Aug-2009
Publisher: Amer scientific publishers
Series Title: Journal of nanoscience and nanotechnology vol:9 issue:8 pages:4700-4708
Abstract: We report on the experimental observation by scanning tunneling microscopy at low temperature of ring-like features that appear around Co metal islands deposited on a clean (110) oriented surface of cleaved p-type InAs crystals. These features are visible in spectroscopic images within a certain range of negative tunneling bias voltages due to the presence of a negative differential conductance in the current-voltage dependence. A theoretical model is introduced, which takes into account non-equilibrium effects in the small tunneling junction area. In the framework of this model the appearance of the ring-like features is explained in terms of interference effects between electrons tunneling directly and indirectly (via a Co island) between the tip and the InAs surface.
ISSN: 1533-4880
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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