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 …
intrinsic (chiral universal) symmetry classes. The prominent examples of these systems are …
Semiclassical treatment of quantum chaotic transport with a tunnel barrier
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 …
a tunnel barrier is present in one of the leads. Using a semiclassical approach formulated in …
Quantum transport in chaotic cavities with tunnel barriers
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 …
symmetric polynomials in order to solve a long-standing problem in the field of quantum …
Thermodynamic uncertainty relations in mesoscopic devices
We investigate the thermodynamic uncertainty relations (TURs) in mesoscopic devices for
all universal symmetry classes of Wigner-Dyson and Dirac (chiral). The observables of …
all universal symmetry classes of Wigner-Dyson and Dirac (chiral). The observables of …
Transport moments and Andreev billiards with tunnel barriers
Open chaotic systems are expected to possess universal transport statistics and recently
there have been many advances in understanding and obtaining expressions for their …
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 …
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 …
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 …
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 …
probability distributions of transport observables associated with the first four charge-transfer …
Conductance fluctuations in chaotic systems with tunnel barriers
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 …
matter of fact, recent investigations of transport through quantum chaotic systems have …