40 citations · 158 across the 11 of their papers we have counts for
11 papers
Jittery Quantum Boomerang Effect
Pedro Dornelas, Gerson J. Ferreira
We study the dynamics of a spin-polarized wave packet in a disordered Rashba two-dimensional electron gas and identify a jittery quantum boomerang effect in which longitudinal and…
Physical Pictures for Quasisymmetry in Crystals
Bryan D. Assunção, Emmanuel V. C. Lopes, Tome M. Schmidt +1
Quasisymmetry (QS) provides a novel route to understand and control near-degeneracies, Berry curvature, optical selection rules, and symmetry-protected phenomena in quantum materia…
An Unusual Dresselhaus Spin-Orbit Contribution of Even Order in Momentum
Hao Yang, Wei Wang, Gerson J. Ferreira +3
The spin-orbit (SO) coupling is conventionally known to manifest as \emph{odd} functions of momentum. Here, through both model calculations and symmetry analysis along with the met…
Phase transitions and scale invariance in topological Anderson insulators
Bryan D. Assunção, Gerson J. Ferreira, Caio H. Lewenkopf
We investigate disordered-driven transitions between trivial and topological insulator (TI) phases in two-dimensional (2D) systems. Our study primarily focuses on the BHZ model wit…
Electrical control of spin relaxation anisotropy during drift transport in a two-dimensional electron gas
F. G. G. Hernandez, G. J. Ferreira, M. Luengo-Kovac +4
Spin relaxation was studied in a two-dimensional electron gas confined in a wide GaAs quantum well. Recently, the control of the spin relaxation anisotropy by diffusive motion was…
Orbital pseudospin-momentum locking in two-dimensional chiral borophene
Felipe Crasto de Lima, Gerson J. Ferreira, Roberto H. Miwa
Recently, orbital-textures have been found in Rashba and topological insulator (TI) surface states as a result of the spin-orbit coupling (SOC). Here, we predict a orbita…
Layertronic control of topological states in multilayer metal-organic frameworks
F. Crasto de Lima, G. J. Ferreira, R. H. Miwa
We investigate the layer localization control of two-dimensional states in multilayer metal-organic frameworks (MOFs). For finite stackings of (NiC4S4)3 MOFs, the weak van der Waal…
Gate control of the spin mobility through the modification of the spin-orbit interaction in two-dimensional systems
M. Luengo-Kovac, F. C. D. Moraes, G. J. Ferreira +5
Spin drag measurements were performed in a two-dimensional electron system set close to the crossed spin helix regime and coupled by strong intersubband scattering. In a sample wit…
Macroscopic transport of a current-induced spin polarization
S. Ullah, G. J. Ferreira, G. M. Gusev +2
Experimental studies of spin transport in a two-dimensional electron gas hosted by a triple GaAs/AlGaAs quantum well are reported. Using time-resolved Kerr rotation, we observed th…
Macroscopic transverse drift of long current-induced spin coherence in two-dimensional electron gases
F. G. G. Hernandez, S. Ullah, G. J. Ferreira +3
We imaged the transport of current-induced spin coherence in a two-dimensional electron gas confined in a triple quantum well. Nonlocal Kerr rotation measurements, based on the opt…
Current-controlled Spin Precession of Quasi-Stationary Electrons in a Cubic Spin-Orbit Field
P. Altmann, F. G. G. Hernandez, G. J. Ferreira +4
Space- and time-resolved measurements of spin drift and diffusion are performed on a GaAs-hosted two-dimensional electron gas. For spins where forward drift is compensated by backw…