Open chaotic Dirac billiards: Weak (anti) localization, conductance fluctuations, and decoherence

MSM Barros, AJN Júnior, AF Macedo-Junior, J Ramos… - Physical Review B, 2013 - APS
In this paper, we investigate the transport properties of open chaotic Dirac billiards and their
intrinsic (chiral universal) symmetry classes. The prominent examples of these systems are …

Semiclassical treatment of quantum chaotic transport with a tunnel barrier

PHS Bento, M Novaes - Journal of Physics A: Mathematical and …, 2021 - iopscience.iop.org
We consider the problem of a semiclassical description of quantum chaotic transport, when
a tunnel barrier is present in one of the leads. Using a semiclassical approach formulated in …

Quantum transport in chaotic cavities with tunnel barriers

LH Oliveira, PHS Bento, M Novaes - Physical Review B, 2022 - APS
We bring together the semiclassical approximation, matrix integrals, and the theory of
symmetric polynomials in order to solve a long-standing problem in the field of quantum …

Thermodynamic uncertainty relations in mesoscopic devices

I Lucena, RA Batista, J Ramos - Physical Review E, 2023 - APS
We investigate the thermodynamic uncertainty relations (TURs) in mesoscopic devices for
all universal symmetry classes of Wigner-Dyson and Dirac (chiral). The observables of …

Transport moments and Andreev billiards with tunnel barriers

J Kuipers, K Richter - Journal of Physics A: Mathematical and …, 2013 - iopscience.iop.org
Open chaotic systems are expected to possess universal transport statistics and recently
there have been many advances in understanding and obtaining expressions for their …

Semiclassical matrix model for quantum chaotic transport with time-reversal symmetry

M Novaes - Annals of Physics, 2015 - Elsevier
We show that the semiclassical approach to chaotic quantum transport in the presence of
time-reversal symmetry can be described by a matrix model. In other words, we construct a …

Average shot-noise power via a diagrammatic method

ALR Barbosa, J Ramos… - Journal of Physics A …, 2010 - iopscience.iop.org
In this work we use a diagrammatic method for integration over the unitary group to obtain a
quantum correction to the average shot-noise power of a chaotic cavity with non-ideal …

Spin-to-charge conversion in 2D electron gas and single-layer graphene devices

J Ramos, TC Vasconcelos, ALR Barbosa - Journal of Applied Physics, 2018 - pubs.aip.org
We investigate the spin-to-charge conversion emerging from a mesoscopic device
connected to multiple terminals. We obtain analytical expressions to the characteristic …

Distribution of charge cumulants of a chaotic quantum dot with nonideal contacts

FAG Almeida, S Rodríguez-Pérez, AMS Macêdo - Physical Review B …, 2009 - APS
We performed numerical simulations of a quantum dot with nonideal contacts to obtain the
probability distributions of transport observables associated with the first four charge-transfer …

Conductance fluctuations in chaotic systems with tunnel barriers

D Waltner, J Kuipers, P Jacquod, K Richter - Physical Review B—Condensed …, 2012 - APS
Quantum effects are expected to disappear in the short-wavelength, semiclassical limit. As a
matter of fact, recent investigations of transport through quantum chaotic systems have …