44 citations · 249 across the 15 of their papers we have counts for
14 papers
Breakdown of topological protection due to non-magnetic edge disorder in two-dimensional materials in the Quantum Spin Hall phase
Leandro R. F. Lima, Caio Lewenkopf
We study the suppression of the conductance quantization in quantum spin Hall systems by a combined effect of electronic interactions and edge disorder, that is ubiquitous in exfol…
Seebeck and Nernst effects in topological insulator: the case of strained HgTe
Francisco J. Peña, Oscar Negrete, Ning Ma +3
We theoretically study the thermoelectric transport properties of strained HgTe in the topological insulator phase. We developed a model for the system using a Dirac Hamiltonian in…
Local equilibrium charge and spin currents in two-dimensional topological systems
Leandro R. F. Lima, Caio Lewenkopf
We study the equilibrium and nonequilibrium electronic transport properties of multiprobe topological systems using a combination of the Landauer-Büttiker approach and nonequilibri…
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…
A numerical method to efficiently calculate the transport properties of large systems: an algorithm optimized for sparse linear solvers
Tatiane P. Santos, Leandro R. F. Lima, Caio H. Lewenkopf
We present a self-contained description of the wave-function matching (WFM) method to calculate electronic quantum transport properties of nanostructures using the Landauer-Büttike…
Investigating transverse Hall conductances using two-terminal setups
Alexis R. Hernández, Leandro R. F. Lima
In this paper we present a method to numerically study transverse Hall conductances using a two-terminal setup. Using nonlinear transport concepts we find that the Hall voltage dep…
An efficient method for computing the electronic transport properties of a multi-terminal system
Leandro R. F. Lima, Amintor Dusko, Caio Lewenkopf
We present a multiprobe recursive Green's function method to compute the transport properties of mesoscopic systems using the Landauer-Büttiker approach. By introducing an adaptive…
Tunable spin-polarized edge transport in inverted quantum-well junctions
Dimy Nanclares, Leandro R. F. Lima, Caio H. Lewenkopf +1
Inverted HgTe/CdTe quantum wells have been used as a platform for the realization of 2D topological insulators, bulk insulator materials with spin-helical metallic edges states pro…
Phononic heat transport in nanomechanical structures: steady-state and pumping
Marcone I. Sena-Junior, Leandro R. F. Lima, Caio H. Lewenkopf
We study the heat transport due to phonons in nanomechanical structures using a phase space representation of non-equilibrium Green's functions. This representation accounts for th…
Electronic transport in disordered MoS nanoribbons
Emilia Ridolfi, Leandro R. F. Lima, Eduardo R. Mucciolo +1
We study the electronic structure and transport properties of zigzag and armchair monolayer molybdenum disulfide nanoribbons using an 11-band tight-binding model that accurately re…
A 50/50 electronic beam splitter in graphene nanoribbons as a building block for electron optics
Leandro R. F. Lima, Alexis R. Hernández, Felipe A. Pinheiro +1
Based on the investigation of the multi-terminal conductance of a system composed of two graphene nanoribbons, in which one is on top of the other and rotated by 60 degrees, we pro…
Disorder assisted transmission due to charge puddles in monolayer graphene: Transmission enhancement and local currents
Leandro R. F. Lima, Caio H. Lewenkopf
We investigate the contribution of charge puddles to the non-vanishing conductivity minimum in disordered graphene flakes at the charge neutrality point. For that purpose, we study…
Random gauge field effects on the conductivity of graphene sheets with disordered ripples
Rhonald Burgos, Jesus Warnes, Leandro R. F. Lima +1
We study the effect of disordered ripples on the conductivity of monolayer graphene flakes. We calculate the relaxation times and the Boltzmann conductivities associated with two m…
The role of the disorder range and electronic energy in the graphene nanoribbons perfect transmission
Leandro R. F. Lima, Felipe A. Pinheiro, Rodrigo B. Capaz +2
Numerical calculations based on the recursive Green's functions method in the tight-binding approximation are performed to calculate the dimensionless conductance in disordered…