342 citations · 987 across the 16 of their papers we have counts for
16 papers
Effective mass suppression upon complete spin-polarization in an isotropic two-dimensional electron system
T. Gokmen, Medini Padmanabhan, K. Vakili +2
We measure the effective mass (m*) of interacting two-dimensional electrons confined to a 4.5 nm-wide AlAs quantum well. The electrons in this well occupy a single out-of-plane con…
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…
Valley polarization and susceptibility of composite fermions around nu=3/2
N. C. Bishop, M. Padmanabhan, K. Vakili +3
We report magnetotransport measurements of fractional quantum Hall states in an AlAs quantum well around Landau level filling factor nu = 3/2, demonstrating that the quasiparticles…
Spin-valley phase diagram of the two-dimensional metal-insulator transition
O. Gunawan, T. Gokmen, K. Vakili +3
Using symmetry breaking strain to tune the valley occupation of a two-dimensional (2D) electron system in an AlAs quantum well, together with an applied in-plane magnetic field to…
Two-dimensional electrons occupying multiple valleys in AlAs
M. Shayegan, E. P. De Poortere, O. Gunawan +3
Two-dimensional electrons in AlAs quantum wells occupy multiple conduction-band minima at the X- points of the Brillouin zone. These valleys have large effective mass and g-factor…
Zeeman splitting of interacting two-dimensional electrons with two effective masses
K. Vakili, E. Tutuc, M. Shayegan
We have realized an AlAs two-dimensional electron system in which electrons occupy conduction-band valleys with different Fermi contours and effective masses. In the quantum Hall r…