1.4k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- S. P. Sorella2 profiles170 · h 33
- R. O. Ramos121 · h 34
- M. S. Guimaraes2 profiles73 · h 20
- D. Dudal66 · h 37
- V. Lemes2 profiles64 · h 17
- M. Capri58 · h 21
- D. G. Barci50 · h 13
- Anzhong Wang2 profiles47 · h 48
- M. D. Da Silva2 profiles37 · h 17
- R. Sobreiro2 profiles36 · h 19
- H. Verschelde33 · h 35
- H. P. de Oliveira31 · h 16
- Charles UniversityCZ1.9k papers
- Centre National de la Recherche ScientifiqueFR1.9k papers
- Centro Brasileiro de Pesquisas FísicasBR1.9k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.8k papers
- Fermi National Accelerator LaboratoryUS1.8k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.8k papers
- Panjab UniversityIN1.7k papers
- Tata Institute of Fundamental ResearchIN1.7k papers
- Brown UniversityUS1.7k papers
- University of DelhiIN1.7k papers
- University of Nebraska–LincolnUS1.7k papers
- Florida State UniversityUS1.7k papers
37 papers · 1 filter
A Lorentz-violating low-energy model for the bilayer Graphene
Y. M. P. Gomes, M. J. Neves
In this work, we propose a model with Lorentz symmetry violation which describes the electronic low energy limit of the AA-bilayer graphene (BLG) system. The AA-type bilayer is kno…
Thermoelectric properties of topological chains coupled to a quantum dot
A. C. P. Lima, R. C. Bento Ribeiro, J. H. Correa +3
Topological one-dimensional superconductors can sustain in their extremities zero energy modes that are protected by different kinds of symmetries. The observation of these excitat…
Tilted Dirac cone effects and chiral symmetry breaking in a planar four-fermion model
Y. M. P. Gomes, Rudnei O. Ramos
We analyze the chiral symmetry breaking in a planar four-fermion model with non-null chemical potential, temperature and including the effect of the tilt of the Dirac cone. The sys…
Switching valley filtered current directions in multi-terminal graphene systems
Vanessa Torres, Daiara Faria, Andrea Latgé
Valley filtering processes have been explored in different graphene-based configurations and scenarios to control transport responses. Here we propose graphene multi-terminal set-u…
Valley polarization braiding in strained graphene
D. Faria, C. León, L. R. F. Lima +2
Previous works on deformed graphene predict the existence of valley-polarized states, however, optimal conditions for their detection remain challenging. We show that in the quantu…
Tuning transport properties on graphene multi-terminal structures by mechanical deformations
V. Torres, D. Faria, A. Latgé
Straintronic devices made of carbon-based materials have been pushed up due to the graphene high mechanical flexibility and the possibility of interesting changes in transport prop…
Gap engineering in strained fold-like armchair graphene nanoribbons
V. Torres, C. Leon, D. Faria +1
Strain fold-like deformations on armchair graphene nanoribbons (AGNRs) can be properly engineered in experimental setups, and could lead to a new controlling tool for gaps and tran…
Tuning the pseudospin polarization of graphene by a pseudo-magnetic field
Alexander Georgi, Peter Nemes-Incze, Ramon Carrillo-Bastos +16
One of the intriguing characteristics of honeycomb lattices is the appearance of a pseudo-magnetic field as a result of mechanical deformation. In the case of graphene, the Landau…
Strained fold assisted transport in graphene systems
R. Carrillo-Bastos, C. León, D. Faria +3
Deformations in graphene systems are central elements in the novel field of {\it straintronics}. Various strain geometries have been proposed to produce specific properties but the…
Gauge fields in graphene with nonuniform elastic deformations: A quantum field theory approach
Enrique Arias, Alexis R. Hernández, Caio Lewenkopf
We investigate the low energy continuum limit theory for electrons in a graphene sheet under strain. We use the quantum field theory in curved spaces to analyze the effect of the s…
Nonlinear conductance in a ballistic Aharonov-Bohm ring
Alexis R. Hernández, Caio H. Lewenkopf
The nonlinear electronic transport properties of a ballistic Aharonov-Bohm ring are investigated. It is demonstrated how the electronic interaction breaks the phase rigidity in a t…
Adiabatic Charge Pumping through Quantum Dots in the Coulomb Blockade Regime
A. R. Hernández, F. A. Pinheiro, C. H. Lewenkopf +1
We investigate the influence of the Coulomb interaction on the adiabatic pumping current through quantum dots. Using nonequilibrium Green's functions techniques, we derive a genera…
Conductance quantization and transport gap in disordered graphene nanoribbons
Eduardo R. Mucciolo, Antonio H. Castro Neto, Caio H. Lewenkopf
We study numerically the effects of edge and bulk disorder on the conductance of graphene nanoribbons. We compute the conductance suppression due to localization induced by edge sc…
Metastable anisotropy orientation of nematic quantum Hall fluids
Daniel G. Barci, Zochil González Arenas
We analyze the experimental observation of metastable anisotropy resistance orientation at half filled quantum Hall fluids by means of a model of a quantum nematic liquid in an exp…
Universal Landauer conductance in chiral symmetric 2d systems
Daniel G. Barci, Luis E. Oxman
We study transport properties of an arbitrarily shaped ultraclean graphene sheet, adiabatically connected to leads,composed by the same material. If the localized interactions do n…
Conductivity and Fano factor in disordered graphene
Caio H. Lewenkopf, Eduardo R. Mucciolo, Antonio H. Castro Neto
Using the recursive Green's function method, we study the problem of electron transport in a disordered single-layer graphene sheet. The conductivity is of order and its de…
g-Factors and Discrete Energy Level Velocities in Nanoparticles
Eduardo R. Mucciolo, Caio H. Lewenkopf, Leonid I. Glazman
We establish relations between the statistics of g factors and the fluctuations of energy in metallic nanoparticles where spin-orbit coupling is present. These relations assume tha…
Non-perturbative approach to backscattering off a dynamical impurity in 1D Fermi systems
Daniel G. Barci, L. Moriconi, M. Moriconi +2
We investigate the problem of backscattering off a time-dependent impurity in a one-dimensional electron gas. By combining the Schwinger-Keldysh method with an adiabatic approximat…
Universal transport properties of open microwave cavities with and without time-reversal symmetry
H. Schanze, M. Martinez-Mares, C. H. Lewenkopf +1
We measure the transmission through asymmetric and reflection-symmetric chaotic microwave cavities in dependence of the number of attached wave guides. Ferrite cylinders are placed…
Orbital magnetic properties of quantum dots: the role of electron-electron interactions
L. G. G. V. Dias da Silva, Caio H. Lewenkopf, Nelson Studart
We study the magnetic orbital response of a system of N interacting electrons confined in a two-dimensional geometry and subjected to a perpendicular magnetic field in the finite t…
Statistical fluctuations of pumping and rectification currents in quantum dots
M. Martinez-Mares, C. H. Lewenkopf, E. R. Mucciolo
We investigate the statistical fluctuations of currents in chaotic quantum dots induced by pumping and rectification at finite temperature and in the presence of dephasing. In open…
Coherent versus sequential electron tunneling in quantum dots
L. E. F. Foa Torres, C. H. Lewenkopf, H. M. Pastawski
Manifestations of quantum coherence in the electronic conductance through nearly closed quantum dots in the Coulomb blockade regime are addressed. We show that quantum coherent tun…
Distribution of reflection coefficients in absorbing chaotic microwave cavities
R. A. Mendez-Sanchez, U. Kuhl, M. Barth +2
The distributions of the reflection coefficients for chaotic microwave cavities with time-reversal symmetry are investigated in different absorption and antenna coupling reg…
Conductance fluctuations and weak localization in chaotic quantum dots
E. R. P. Alves, C. H. Lewenkopf
We study the conductance statistical features of ballistic electrons flowing through a chaotic quantum dot. We show how the temperature affects the universal conductance fluctuatio…