Orbital Hall effect in mesoscopic devices

DB Fonseca, LLA Pereira, ALR Barbosa - Physical Review B, 2023 - APS
We investigate the orbital Hall effect through a mesoscopic device with momentum-space
orbital texture that is connected to four semi-infinite terminals embedded in the Landauer …

Statistics of time delay and scattering correlation functions in chaotic systems. I. Random matrix theory

M Novaes - Journal of Mathematical Physics, 2015 - pubs.aip.org
We consider the statistics of time delay in a chaotic cavity having M open channels, in the
absence of time-reversal invariance. In the random matrix theory approach, we compute the …

Energy-dependent correlations in the S-matrix of chaotic systems

M Novaes - Journal of Mathematical Physics, 2016 - pubs.aip.org
The M-dimensional unitary matrix S (E), which describes scattering of waves, is a strongly
fluctuating function of the energy for complex systems such as ballistic cavities, whose …

Statistics of orbital entanglement production in a chaotic quantum dot with nonideal contacts

FAG Almeida, AMC Souza - Physical Review B—Condensed Matter and …, 2010 - APS
We investigate the statistics of orbital entanglement production between electrons in a
chaotic quantum dot with two-channel leads. Through a random-matrix simulation, we obtain …

Entanglement production in nonideal cavities and optimal opacity

D Villamaina, P Vivo - Physical Review B—Condensed Matter and Materials …, 2013 - APS
We compute analytically the distributions of concurrence C and squared norm N for the
production of electronic entanglement in a chaotic quantum dot. The dot is connected to the …

Association of scattering matrices in quantum networks

FAG Almeida, AMS Macêdo - Journal of Computational Physics, 2013 - Elsevier
Algorithms based on operations that associate scattering matrices in series or in parallel
(analogous to impedance association in a classical circuit) are developed here. We …

Geometric constraints for orbital entanglement production in normal conductors

S Rodriguez-Perez, M Novaes - Physical Review B—Condensed Matter and …, 2012 - APS
We investigate entanglement production in a generic normal conductor, connected to two
single-channel left leads and two single-channel right leads. We consider the joint statistics …

Charge counting statistics and weak localization in a quantum chain

GC Duarte-Filho, FAG Almeida, S Rodríguez-Pérez… - Physical Review B …, 2013 - APS
We study transport properties of a quantum chain formed by an array of chaotic quantum
dots coupled to each other and to electron reservoirs via barriers of arbitrary transparencies …

Algoritmos numéricos de matrizes aleatórias aplicados a sistemas mesoscópicos

FAG ALMEIDA - 2010 - bdtd.ibict.br
O ponto quântico caótico (PQC) é um sistema fundamental para o estudo do transporte
quântico em sistemas mesoscópicos. Experimentalmente, é possível acoplar PQC's …

Klein paradox in chaotic Dirac billiards

AFMR da Silva, MSM Barros, ALR Barbosa, J Ramos - Annals of Physics, 2019 - Elsevier
We investigate the Schrödinger (non-relativistic) and the Dirac (“relativistic”) billiards in the
universal regime. The study is based on a non-ideal quantum resonant scattering numerical …