76 citations · 532 across the 21 of their papers we have counts for
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Composite fermion valley polarization energies: Evidence for particle-hole asymmetry
Medini Padmanabhan, Tayfun Gokmen, Mansour Shayegan
In an ideal two-component two-dimensional electron system, particle-hole symmetry dictates that the fractional quantum Hall states around are equivalent to those around $ν…
Ferromagnetic Fractional Quantum Hall States in a Valley-Degenerate Two-Dimensional Electron System
Medini Padmanabhan, T. Gokmen, M. Shayegan
We study a two-dimensional electron system where the electrons occupy two conduction band valleys with anisotropic Fermi contours and strain-tunable occupation. We observe persiste…
Density dependence of valley polarization energy for composite fermions
Medini Padmanabhan, T. Gokmen, M. Shayegan
In two-dimensional electron systems confined to wide AlAs quantum wells, composite fermions around the filling factor = 3/2 are fully spin polarized but possess a valley degree…
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…