Valley splitting in silicon from the interference pattern of quantum oscillations
M. Lodari,
L. Lampert,
O. Zietz
et al.
Abstract:We determine the energy splitting of the conduction-band valleys in two-dimensional (2D) electrons confined in silicon metal oxide semiconductor (Si-MOS) Hall-bar transistors. These Si-MOS Hall bars are made by advanced semiconductor manufacturing on 300 mm Si wafers and support a 2D electron gas of high quality with a maximum mobility of 17.6×10 3 cm 2 /Vs and minimum percolation density of 3.45 × 10 10 cm −2 . Because of the low disorder, we observe beatings in the Shubnikov-de Haas oscillations that arise f… Show more
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