25 citations · 25 across the 3 of their papers we have counts for
6 papers · 1 filter
Valley polarization effects on the localization in graphene Landau levels
Ana L. C. Pereira, P. A. Schulz
Effects of disorder and valley polarization in graphene are investigated in the quantum Hall regime. We find anomalous localization properties for the lowest Landau level (LL), whe…
Hidden Scaling in the Quantum Hall Metal-Insulator Transition
L. Moriconi, Ana L. C. Pereira, P. A. Schulz
Scaling properties of the quantum Hall metal-insulator transition are severely affected by finite size effects in small systems. Surprisingly, despite the narrow spatial range wher…
Radiation induced zero-resistance states: a dressed electronic structure effect
P. H. Rivera, P. A. Schulz
Recent results on magnetoresistance in a two dimensional electron gas under crossed magnetic and microwave fields show a new class of oscillations, suggesting a new kind of zero-re…
Moving a perturbation across quantum dots: tuning of Fano resonances
M. Mendoza, P. A. Schulz
We propose a controllable way of tuning Fano resonances in open quantum dots in the absence of magnetic field. A quantum dot can be modified by changing the gate voltages that defi…
Intense AC field driven superlattices with barrier width dimerization
P. H. Rivera, N. Studart, P. A. Schulz
The evolution of two coupled mini-bands, generated by alternating barrier widths dimerization of a superlattice, driven by intense AC fields is investigated. The present model deli…
Tuning of dynamic localization in coupled minibands: signatures of a field induced insulator-metal transition
P. H. Rivera, P. A. Schulz
We follow the evolution of dressed coupled mini-bands as a function of an AC field intensity, non perturbatively, for a wide field frequency range. High and low frequency limits ar…