100 citations · 367 across the 24 of their papers we have counts for
24 papers
Robustness of RKKY interactions across a Weyl node-annihilation transition
João V. F. Alves, Joelson F. Silva, Luis G. G. V. Dias da Silva
Weyl semimetals (WSMs), with their unique topological properties and distinct electronic structure, exhibit intriguing properties when either time-reversal or inversion symmetries…
Ni-O hybridization as a stabilizer for superconductivity in LaNiO: a DFT+RPA study
Lauro B. Braz, Daniel D. Rivera, Emmanuel V. C. Lopes +3
The superconducting gap symmetry of high-pressure bilayer nickelates remains under debate, with weak- and strong-coupling approaches yielding different pairing tendencies. In this…
Density waves in low-pressure bilayer nickelates
Lauro B. Braz, Steffen Bötzel, Frank Lechermann +4
The low-pressure phase diagram of LaNiO provides an important reference for understanding its pressure-induced high-temperature superconductivity. While the spin-densit…
Onset of spin-valley order and Stoner boundaries in twisted WSe
Lauro B. Braz, Luis G. G. V. Dias da Silva
We investigate spin-valley instabilities and their connection to the magnetically ordered states recently observed in the twisted bilayer dichalcogenide WSe at a twist an…
Charge and spin fluctuations in superconductors with intersublattice and interorbital interactions
Lauro B. Braz, George B. Martins, Luis G. G. V. Dias da Silva
Multiband superconductors have featured one of the main challenges to achieve a comprehensive understanding of unconventional superconductivity. Here, the multiband character is st…
Superconductivity from spin fluctuations and long-range interactions in magic-angle twisted bilayer graphene
Lauro B. Braz, George B. Martins, Luis G. G. V. Dias da Silva
Magic-angle twisted bilayer graphene (MATBG) has been extensively explored both theoretically and experimentally as a suitable platform for a rich and tunable phase diagram that in…
Zero-frequency supercurrent susceptibility signatures of trivial and topological zero-energy states in nanowire junctions
Lucas Baldo, Luis G. G. V. Dias Da Silva, Annica M. Black-Schaffer +1
We propose a method to distinguish between trivial and topological, Majorana, zero-energy states in both short and long superconductor-normal-superconductor junctions based on Rash…
Overlap of parafermionic zero modes at a finite distance
Raphael L. R. C. Teixeira, Andreas Haller, Roshni Singh +4
Parafermion bound states (PBSs) are generalizations of Majorana bound states (MBSs) and have been predicted to exist as zero-energy eigenstates in proximitized fractional quantum H…
Near zero-energy Caroli-de Gennes-Matricon vortex states in the presence of impurities
Bruna S. de Mendonça, Antonio L. R. Manesco, Nancy Sandler +1
Caroli-de Gennes-Matricon (CdGM) states are localized states with a discrete energy spectrum bound to the core of vortices in superconductors. In topological superconductors, CdGM…
Edge parafermions in fermionic lattices
Raphael L. R. C. Teixeira, Luis G. G. V. Dias da Silva
Parafermions modes are non-Abelian anyons which were introduced as generalizations of Majorana states. In particular, parafermions can…
Electric field-induced edge state oscillations in GaSb/InAs quantum wells
Marcos H. L. de Medeiros, Raphael L. R. C. Teixeira, Guilherme M. Sipahi +1
Inverted-gap GaSb/InAs quantum wells have long been predicted to show quantum spin Hall insulator (QSHI) behavior. The experimental characterization of the QSHI phase in these syst…
Quantum theory of an atom in proximity to a superconductor
Matthias Le Dall, Igor Diniz, Luis G. G. V. Dias da Silva +1
The impact of superconducting correlations on localized electronic states is important for a wide range of experiments in fundamental and applied superconductivity (SC). This inclu…
Conductance and Kondo Interference beyond Proportional Coupling
Luis G. G. V. Dias da Silva, Caio H. Lewenkopf, Edson Vernek +2
The transport properties of nanostructured systems are deeply affected by the geometry of the effective connections to metallic leads. In this work we derive a conductance expressi…
Transport signatures of Kondo physics and quantum criticality in graphene with magnetic impurities
David A. Ruiz-Tijerina, Luis G. G. V. Dias da Silva
Localized magnetic moments have been predicted to develop in graphene samples with vacancies or adsorbates. The interplay between such magnetic impurities and graphene's Dirac quas…
Symmetry-protected coherent transport for diluted vacancies and adatoms in graphene
David A. Ruiz-Tijerina, Luis G. G. V. Dias da Silva
We study the effects of a low concentration of adatoms or single vacancies in the linear-response transport properties of otherwise clean graphene. These impurities were treated as…
Coulomb charging energy of vacancy-induced states in graphene
Vladimir G. Miranda, Luis G. G. V. Dias da Silva, Caio H. Lewenkopf
Vacancies in graphene have been proposed to give rise to -like magnetism in carbon materials, a conjecture which has been supported by recent experimental evidence. A key elemen…
Spin versus charge noise from Kondo traps
Luis G. G. V. Dias da Silva, Rogerio de Sousa
Magnetic and charge noise have common microscopic origin in solid state devices, as described by a universal electron trap model. In spite of this common origin, magnetic (spin) an…
Interaction effects on a Majorana zero mode leaking into a quantum dot
David A. Ruiz-Tijerina, E. Vernek, Luis G. G. V. Dias da Silva +1
We have recently shown [Phys. Rev. B {\bf 89}, 165314 (2014)] that a non--interacting quantum dot coupled to a one--dimensional topological superconductor and to normal leads can s…
Disorder-mediated Kondo effect in graphene
Vladimir G. Miranda, Luis G. G. V. Dias da Silva, Caio H. Lewenkopf
We study the emergence of strongly correlated states and Kondo physics in disordered graphene. Diluted short range disorder gives rise to localized midgap states at the vicinity of…
Spin-polarized conductance in double quantum dots: Interplay of Kondo, Zeeman and interference effects
Luis G. G. V. Dias da Silva, Edson Vernek, Kevin Ingersent +2
We study the effect of an external magnetic field in the Kondo regime of a double-quantum-dot system in which a strongly correlated dot (the "hanging dot") is coupled to a second,…
Signatures of quantum phase transitions in parallel quantum dots: Crossover from local-moment to underscreened spin-1 Kondo physics
Arturo Wong, W. Brian Lane, Luis G. G. V. Dias da Silva +3
We study a strongly interacting "quantum dot 1" and a weakly interacting "dot 2" connected in parallel to metallic leads. Gate voltages can drive the system between Kondo-quenched…
Time Evolution with the DMRG Algorithm: A Generic Implementation for Strongly Correlated Electronic Systems
G. Alvarez, L. G. G. V. Dias da Silva, E. Ponce +1
A detailed description of the time-step-targetting time evolution method within the DMRG algorithm is presented. The focus of this publication is on the implementation of the algor…
Real-time dynamics of particle-hole excitations in Mott insulator-metal junctions
Luis G. G. V. Dias da Silva, Khaled A. Al-Hassanieh, Adrian E. Feiguin +2
Charge excitations in Mott insulators (MIs) are distinct from their band-insulator counterparts and they can provide a mechanism for energy harvesting in solar cells based on stron…
Short-range interactions in a two-electron system: energy levels and magnetic properties
L. G. G. V. Dias da Silva, M. A. M. de Aguiar
The problem of two electrons in a square billiard interacting via a finite-range repulsive Yukawa potential and subjected to a constant magnetic field is considered. We compute the…