88 citations · 165 across the 15 of their papers we have counts for
15 papers
Vanadium doping induced valley asymmetries in WS monolayers
Frederico B. Sousa, Boyang Zheng, Elizabeth Grace Houser +10
Transition metal dichalcogenide (TMD) monolayers offer an innovative platform for encoding and manipulating information through the valley degree of freedom. While unique valley-re…
Effect of electric current on optical response of viscous electron-hole plasma
Yu. A. Pusep, M. A. T. Patricio, G. M. Jacobsen +3
The influence of the Hall voltage on the photoluminescence of a dense hydrodynamic electron-hole plasma laser generated in a mesoscopic n-doped GaAs channel under intense laser exc…
Anisotropic Dopant and Strain Architectures in WS Nanocrystals Driven by Growth Kinetics
Frederico B. Sousa, Raphaela de Oliveira, Matheus J. S. Matos +11
Dopant distribution in two-dimensional semiconductors is typically assumed to be stochastic, limiting deterministic defect engineering. Here, we show that non-equilibrium growth ki…
The Emergence of Mem-Emitters
Victor Lopez-Richard, Igor Ricardo Filgueira e Silva, Alessandra Ames +5
The advent of memristors and resistive switching has transformed solid state physics, enabling advanced applications such as neuromorphic computing. Inspired by these developments,…
Strong magneto-optical responses of an ensemble of defect-bound excitons in ambient exposed WS and WSe monolayers
Frederico B. Sousa, Alessandra Ames, Mingzu Liu +8
Transition metal dichalcogenide (TMD) monolayers present a singular coupling in their spin and valley degrees of freedom. Moreover, by applying an external magnetic field it is pos…
Hydrodynamics of electron-hole fluid photogenerated in a mesoscopic two-dimensional channel
M. A. T. Patricio, G. M. Jacobsen, M. D. Teodoro +3
The dynamics of the diffusion flow of holes photoinjected into a mesoscopic GaAs channel of variable width, where they, together with background electrons, form a hydrodynamic elec…
Lingering Times at Resonance: The Case of Sb-based Tunneling Devices
Edgar David Guarin Castro, Andreas Pfenning, Fabian Hartmann +7
Concurrent natural time scales related to relaxation, recombination, trapping, and drifting processes rule the semiconductor heterostructures' response to external drives when char…
Optical mapping of non-equilibrium charge carriers
E. David Guarin Castro, A. Pfenning, F. Hartmann +6
We investigate the energy relaxation segmentation in a resonant tunneling heterostructures by assessing the optical and transport dynamics of non-equilibrium charge carriers. The e…
Diffusion of photo-excited holes in viscous electron fluid
Yu. A. Pusep, M. D. Teodoro, V. Laurindo +3
The diffusion of photo-generated holes is studied in a high-mobility mesoscopic GaAs\ channel where electrons exhibit hydrodynamic properties. It is shown that the injection of hol…
Spin dependent analysis of homogeneous and inhomogeneous exciton decoherence in magnetic fields
V. Laurindo, E. D. Guarin Castro, G. M. Jacobsen +9
This paper discusses the combined effects of optical excitation power, interface roughness, lattice temperature, and applied magnetic fields on the spin-coherence of excitonic stat…
Determination of carrier density and dynamics via magneto-electroluminescence spectroscopy in resonant tunneling diodes
E. R. Cardozo de Oliveira, A. Naranjo, A. Pfenning +6
We study the magneto-transport and magneto-electroluminescence properties of purely n-doped GaAs/AlGaAs resonant tunneling diodes with an InGaAs q…
Magnetically controlled exciton transfer in hybrid quantum dot-quantum well nanostructures
V. Laurindo, Yu. I. Mazur, E. R. Cardozo de Oliveira +8
A magnetophotoluminescence study of the carrier transfer with hybrid InAs/GaAs quantum dot(QD)-InGaAs quantum well (QW) structures is carried out where we observe an unsual depende…
Electroluminescence on-off ratio control of n-i-n GaAs/AlGaAs-based resonant tunneling structures
E. R. Cardozo de Oliveira, A. Pfenning, E. D. Guarin +7
We explore the nature of the electroluminescence (EL) emission of purely n-doped GaAs/AlGaAs resonant tunneling diodes (RTDs) and the EL evolution with voltage. A singular feature…
Topology driven g-factor tuning in type-II quantum dots
J. M. Llorens, V. Lopes-Oliveira, V. López-Richard +8
We investigate how the voltage control of the exciton lateral dipole moment induces a transition from singly to doubly connected topology in type II InAs/GaAsSb quantum dots. The l…
Aharonov-Bohm interference in quantum ring exciton: effects of built-in electric fields
M. D. Teodoro, V. L. Campo, V. Lopez-Richard +10
We report a comprehensive discussion of quantum interference effects due to the finite structure of excitons in quantum rings and their first experimental corroboration observed in…