170 citations · 599 across the 14 of their papers we have counts for
9 papers · 1 filter
Spin susceptibility and effective mass of two-dimensional electrons in MgxZn1-xO/ZnO heterostructures
A. Tsukazaki, A. Ohtomo, M. Kawasaki +9
We report measurements of the spin susceptibility and the electron effective mass for two-dimensional electrons confined at the interfaces of MgxZn1-xO/ZnO single heterostructures…
Parallel Magnetic Field Tuning of Valley Splitting in AlAs Two-Dimensional Electrons
T. Gokmen, Medini Padmanabhan, O. Gunawan +4
We demonstrate that, in a quasi-two-dimensional electron system confined to an AlAs quantum well and occupying two conduction-band minima (valleys), a parallel magnetic field can c…
Spin Orientation of Holes in Quantum Wells
R. Winkler, Dimitrie Culcer, S. J. Papadakis +2
This paper reviews the spin orientation of spin-3/2 holes in quantum wells. We discuss the Zeeman and Rashba spin splitting in hole systems that are qualitatively different from th…
Enhancement of valley susceptibility upon complete spin-polarization
Medini Padmanabhan, T. Gokmen, M. Shayegan
Measurements on a two-dimensional electron system confined to an AlAs quantum well reveal that for a given electron density the valley susceptibility, defined as the change in vall…
Dependence of Effective Mass on Spin and Valley Degrees of Freedom
T. Gokmen, Medini Padmanabhan, M. Shayegan
We measure the effective mass (m*) of interacting two-dimensional electrons confined to an AlAs quantum well while we change the conduction-band valley occupation and the spin pola…
High-quality quantum point contact in two-dimensional GaAs (311)A hole system
J. Shabani, J. R. Petta, M. Shayegan
We studied ballistic transport across a quantum point contact (QPC) defined in a high-quality, GaAs (311)A two-dimensional (2D) hole system using shallow etching and top-gating. Th…