Journal
LOW TEMPERATURE PHYSICS
Volume 29, Issue 3, Pages 196-201Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1542440
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The low-temperature electron transport on semiconductor surfaces has been studied using an ultrahigh-vacuum, variable temperature scanning tunneling microscope (STM). The STM I(V) spectroscopy performed at various temperatures has made it possible to investigate the temperature dependence (300 K to 35 K) of the surface conductivity of three different semiconductor surfaces: highly doped n-type Si(100), p-type Si(100), and hydrogenated C(100). Low temperature freezing of specific surface electronic channels on the highly doped n-type Si(100) and moderately doped p-type Si(100) surfaces could be achieved, whereas the total surface conductivity on the hydrogenated C(100) surface can be frozen below only 180 K. (C) 2003 American Institute of Physics.
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