369 citations · 1.3k across the 12 of their papers we have counts for
13 papers
Beyond the Flat-Band Paradigm: Open Orbits as a Route to Correlated States in Dispersive Moiré Minibands
Zihao Wang, Pablo M. Perez-Piskunow, Calvin Pei Yu Wong +16
The realization of fractional Chern insulators has largely relied on isolated flat bands in complex bilayer or multilayer moiré systems with ideal quantum geometry. Whether such ph…
Open-orbit induced low field extremely large magnetoresistance in graphene/h-BN superlattices
Zihao Wang, Pablo M. Perez-Piskunow, Calvin Pei Yu Wong +13
We report intriguing and hitherto overlooked low-field room temperature extremely large magnetoresistance (XMR) patterns in graphene/hexagonal boron nitride (h-BN) superlattices th…
Chiral Anomaly Trapped in Weyl Metals: Nonequilibrium Valley Polarization at Zero Magnetic Field
Pablo M. Perez-Piskunow, Nicandro Bovenzi, Anton R. Akhmerov +1
In Weyl semimetals the application of parallel electric and magnetic fields leads to valley polarization -- an occupation disbalance of valleys of opposite chirality -- a direct co…
Hinge Spin Polarization in Magnetic Topological Insulators Revealed by Resistance Switch
Pablo M. Perez-Piskunow, Stephan Roche
We report on the possibility to detect hinge spin polarization in magnetic topological insulators by resistance measurements. By implementing a three-dimensional model of magnetic…
Hybrid kernel polynomial method
Muhammad Irfan, Sathish R. Kuppuswamy, Daniel Varjas +4
The kernel polynomial method allows to sample overall spectral properties of a quantum system, while sparse diagonalization provides accurate information about a few important stat…
Computation of topological phase diagram of disordered PbSnTe using the kernel polynomial method
Daniel Varjas, Michel Fruchart, Anton R. Akhmerov +1
We present an algorithm to determine topological invariants of inhomogeneous systems, such as alloys, disordered crystals, or amorphous systems. Based on the kernel polynomial meth…
Hierarchy of Floquet gaps and edge states for driven honeycomb lattices
Pablo M. Perez-Piskunow, Luis E. F. Foa Torres, Gonzalo Usaj
Electromagnetic driving in a honeycomb lattice can induce gaps and topological edge states with a structure of increasing complexity as the frequency of the driving lowers. While t…
Floquet interface states in illuminated three-dimensional topological insulators
H. L. Calvo, L. E. F. Foa Torres, P. M. Perez-Piskunow +2
Recent experiments showed that the surface of a three dimensional topological insulator develops gaps in the Floquet-Bloch band spectrum when illuminated with a circularly polarize…
Multiterminal Conductance of a Floquet Topological Insulator
L. E. F. Foa Torres, P. M. Perez-Piskunow, C. A. Balseiro +1
We report on simulations of the dc conductance and quantum Hall response of a Floquet topological insulator using Floquet scattering theory. Our results reveal that laser-induced e…
Irradiated graphene as a tunable Floquet topological insulator
Gonzalo Usaj, P. M. Perez-Piskunow, L. E. F. Foa Torres +1
In the presence of a circularly polarized mid-infrared radiation graphene develops dynamical band gaps in its quasi-energy band structure and becomes a Floquet insulator. Here we a…
Floquet chiral edge states in graphene
P. M. Perez-Piskunow, Gonzalo Usaj, C. A. Balseiro +1
We report on the emergence of laser-induced chiral edge states in graphene ribbons. Insights on the nature of these Floquet states is provided by an analytical solution which is co…
Non-perturbative laser effects on the electrical properties of graphene nanoribbons
Hernan L. Calvo, Pablo M. Perez-Piskunow, Horacio M. Pastawski +2
The use of Floquet theory combined with a realistic description of the electronic structure of illuminated graphene and graphene nanoribbons is developed to assess the emergence of…
Laser-induced effects on the electronic features of graphene nanoribbons
Hernan L. Calvo, Pablo M. Perez-Piskunow, Stephan Roche +1
We study the interplay between lateral confinement and photon-induced processes on the electronic properties of illuminated graphene nanoribbons. We find that by tuning the device…