165 citations · 1.1k across the 17 of their papers we have counts for
16 papers · 1 filter
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…
Anomalous Spin Polarization of GaAs Two-Dimensional Hole Systems
R. Winkler, E. Tutuc, S. J. Papadakis +4
We report measurements and calculations of the spin-subband depopulation, induced by a parallel magnetic field, of dilute GaAs two-dimensional (2D) hole systems. The results reveal…
A Laterally Modulated 2D Electron System in the Extreme Quantum Limit
Sorin Melinte, Mona Berciu, C. Zhou +9
We report on magnetotransport of a two-dimensional electron system (2DES), located 32 nm below the surface, with a surface superlattice gate structure of periodicity 39 nm imposing…
Spin polarization and transition from metallic to insulating behavior in 2D systems
E. Tutuc, E. P. De Poortere, S. J. Papadakis +1
We have made quantitative measurements of the spin polarization of two-dimensional (2D) GaAs (100) electrons and GaAs (311)A holes, as a function of an in-plane magnetic field. The…
Low-field magnetoresistance in GaAs 2D holes
S. J. Papadakis, E. P. De Poortere, H. C. Manoharan +3
We report low-field magnetotransport data in two-dimensional hole systems in GaAs/AlGaAs heterostructures and quantum wells, in a large density range, $2.5 \times 10^{10} \leq p \l…
Resistance Spikes at Transitions between Quantum Hall Ferromagnets
E. P. De Poortere, E. Tutuc, S. J. Papadakis +1
We report a new manifestation of first-order magnetic transitions in two-dimensional electron systems. This phenomenon occurs in aluminum arsenide quantum wells with sufficiently l…