Abstract
The use of scanning probe microscopies--such as Scanning Tunneling Microscopy (STM) and Ballistic Electron Emission Microscopy (BEEM) to study carrier transport through semiconductor heterostructures--is reviewed. The ability of BEEM to probe buried structures below the surface can be exploited to study heterostructure band-offsets and resonant tunneling through quantum structures. It will be shown that BEEM can serve as a powerful probe of the spectroscopy of such structures. The implications of such studies for research on quantum dots and the characterization of new optoelectronic materials will be discussed.
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