13 citations · 19 across the 2 of their papers we have counts for
3 papers
Metallic Behavior of Cyclotron Relaxation Time in Two-Dimensional Systems
Ryuichi Masutomi, Kohei Sasaki, Ippei Yasuda +4
Cyclotron resonance of two-dimensional electrons is studied at low temperatures down to 0.4 K for a high-mobility Si/SiGe quantum well which exhibits a metallic temperature depende…
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…