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Heteroepitaxy Of Gasb On Gaas (111)A For Electron Transport Studies, Madison Drake
Heteroepitaxy Of Gasb On Gaas (111)A For Electron Transport Studies, Madison Drake
Boise State University Theses and Dissertations
III-V semiconductors grown by molecular beam epitaxy (MBE) on (111) surfaces have some interesting electronic properties. For certain materials with a (111)-orientation, the Γ- and L-valleys are reasonably close in energy. This means that it may be possible to take advantage of electron conduction in the L- and Γ-valleys at the same time, allowing us to overcome the so-called “density-of-states bottleneck,” and enable transistors with large drive currents.1 We have investigated this phenomenon in GaSb- and InAs-based 2D electron gases for which the electron effective masses are low.
However, growth of materials with a (111) orientation is typically more …