6 papers
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…
Highly anisotropic commensurability oscillations in two-dimensional holes at the GaAs/AlGaAs (311)A interface
Jeng-Bang Yau, Jeng-Ping Lu, Harindran C. Manoharan +1
Measurements of commensurability oscillations in GaAs/AlGaAs two-dimensional (2D) hole systems grown on GaAs (311)A substrates reveal a remarkable anisotropy: the amplitude of the…
The Effect of Spin Splitting on the Metallic Behavior of a Two-Dimensional System
S. J. Papadakis, E. P. De Poortere, H. C. Manoharan +2
Experiments on a constant-density two-dimensional hole system in a GaAs quantum well reveal that the metallic behavior observed in the zero-magnetic-field temperature dependence of…
Anisotropic Transport of Two-Dimensional Holes in High Landau Levels
M. Shayegan, H. C. Manoharan, S. J. Papadakis +1
Magnetoresistance data taken along and directions in a GaAs/AlGaAs two-dimensional hole sample with van der Pauw geometry exhibit significant anisotropy…
Spontaneous Interlayer Charge Transfer near the Magnetic Quantum Limit
H. C. Manoharan, Y. W. Suen, T. S. Lay +2
Experiments reveal that a confined electron system with two equally-populated layers at zero magnetic field can spontaneously break this symmetry through an interlayer charge trans…
Evidence for a Bilayer Quantum Wigner Solid
H. C. Manoharan, Y. W. Suen, M. B. Santos +1
As the electronic charge distribution in a wide quantum well is tuned from a single-layer through an interacting bilayer configuration to weakly-coupled parallel layers, we observe…