Observation of Standing Waves at Steps on the GaN(0001) Pseudo (1x1) Surface by Scanning Tunneling Spectroscopy at Room Temperature
ORAL
Abstract
Standing waves formed at steps of the GaN(0001) pseudo (1x1) surface are observed with scanning tunneling spectroscopy (STS) at room temperature. The oscillatory behavior of the \textit{dI}/\textit{dV} calculated for free electrons scattered by atomic steps agrees well with that measured by STS, and thus establishes that the surface state of the GaN(0001) pseudo (1x1) has a nearly free-electron like energy dispersion.
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