Direct measurement of quantum-state dispersion in an accumulation layer at a semiconductor surface
- 15 September 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 60 (11), 7752-7755
- https://doi.org/10.1103/physrevb.60.7752
Abstract
We use high-resolution photoemission spectroscopy to measure the dispersions of quantized energy levels located in an accumulation two-dimensional electron channel created in the subsurface region of a semiconductor. The experiments are performed for InAs(110) covered by about monolayer. From the band dispersion, the average effective mass of the carriers in the channel is determined. Our findings are further supported by self-consistent calculations and model-function curve fitting.
Keywords
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