Minigap and Transport in a Two-Dimensional Electron System
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概要
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Conductivities are calculated in a two-dimensional inversion layer on a Stsurface slightly tilted from the (001) both in the presence and in the absence ofa magnetic field. Existence of a minigap caused by valley splitting is shown tostrongly affect the two-dimensional conductivities. The calculation is performedin the Boltzmann transport theory and also in the self-consistent Born approxima-tion in the presence of short-range scatterers. Characteristic behavior of theconductivities near the minigap is very sensitive to the existence of slight intervalleyscattering matrix elements which have completely been ignored previously.Intervalley scatterings are crucial in explaining various experimental results.
- 社団法人日本物理学会の論文
- 1979-11-15
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