14 citations · 30 across the 4 of their papers we have counts for
4 papers
Well-width dependence of valley splitting in Si/SiGe quantum wells
Kohei Sasaki, Ryuichi Masutomi, Kiyohiko Toyama +3
The valley splitting in Si two-dimensional electron systems is studied using Si/SiGe single quantum wells (QWs) with different well widths. The energy gaps for 4 and 5.3 nm QWs, ob…
Insulating Phases Induced by Crossing of Partially Filled Landau Levels in a Si Quantum Well
Tohru Okamoto, Kohei Sasaki, Kiyohiko Toyama +3
We study magnetotransport in a high mobility Si two-dimensional electron system by in situ tilting of the sample relative to the magnetic field. A pronounced dip in the longitudina…
Electronic Transport Properties of the Ising Quantum Hall Ferromagnet in a Si Quantum Well
Kiyohiko Toyama, Takahisa Nishioka, Kentarou Sawano +2
Magnetotransport properties are investigated for a high mobility Si two dimensional electron systems in the vicinity of a Landau level crossing point. At low temperatures, the resi…
Magnetoresistance and spin polarization in the insulating regime of a Si two-dimensional electron system
Mitsuaki Ooya, Kiyohiko Toyama, Tohru Okamoto
We have studied the magnetoresistance in a high-mobility Si inversion layer down to low electron concentrations at which the longitudinal resistivity has an activated temp…