11 citations · 22 across the 8 of their papers we have counts for
8 papers
Staggered orbital magnetization from itinerant electrons: orbital antiferro- and ferrimagnetic phases
Lucas L. Lage, Kevin J. U. Vidarte, Tarik P. Cysne +3
Because electronic orbital angular momentum in solids is inherently non-local, its contribution to magnetism is usually cast in terms of a net orbital magnetization. Here, we show…
Real-Space Spectral Approach to Orbital Magnetization
Kevin J. U. Vidarte, Henrique P. Veiga, João M. Viana Parente Lopes +4
We present a real-space spectral method for computing the orbital magnetization of crystals. Starting from the commutator form of the orbital magnetization operator, we formulate a…
Unveiling the Electronic Origin of Anomalous Contact Conductance in Twisted Bilayer Graphene
Kevin J. U. Vidarte, Caio Lewenkopf, F. Crasto de Lima +3
This study theoretically investigates the contact conductance in twisted bilayer graphene (TBG), addressing recent experimental observations from scanning tunneling microscopy (STM…
Driving electronic features of twisted bilayer zigzag-graphene nanoribbons
Kevin J. U. Vidarte, A. B. Felix, A. Latgé
Novel physical properties have been reported recently by stacking graphene-like systems in different configurations. Here, we explore the nature of emergent localized states at the…
Quasicrystalline 30 twisted bilayer graphene: Fractal patterns and electronic localization properties
Kevin J. U. Vidarte, Caio Lewenkopf
The recently synthesized 30 twisted bilayer graphene (30-TBG) systems are unique quasicrystal systems possessing dodecagonal symmetry with graphene's relativistic p…
Stoner ferromagnetism in low-angle twisted bilayer graphene at three-quarters filling
Kevin J. U. Vidarte, Felipe Pérez Riffo, Eric Suárez Morell +1
We present a theoretical investigation of the magnetic properties exhibited by twisted bilayer graphene (TBG) systems with small twist angles, where the appearance of flat miniband…
High-energy Landau levels in graphene beyond nearest-neighbor hopping processes: Corrections to the effective Dirac Hamiltonian
Kevin J. U. Vidarte, Caio Lewenkopf
We study the Landau level spectrum of bulk graphene monolayers beyond the Dirac Hamiltonian with linear dispersion. We consider an effective Wannier-like tight-binding model obtain…
Revisiting a variational study of the quantum spin-1/2 Heisenberg antiferromagnet
Kevin J. Urcia Vidarte, Luigui A. Chero Nunura, Octavio D. Rodriguez Salmon +1
The variational study of the ground state of the spin anisotropic Heisenberg antiferromagnet has been revisited on a square lattice by improving and correcting past numerical…