3.4k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Université de SherbrookeCA163 papers
- Université de MontréalCA92 papers
- Canadian Institute for Advanced ResearchCA56 papers
- Institut quantiqueCA21 papers
- Centre National de la Recherche ScientifiqueFR17 papers
- Rutgers, The State University of New JerseyUS13 papers
- Imperial College LondonGB12 papers
- National Research Council CanadaCA11 papers
- Polytechnique MontréalCA11 papers
- Donostia International Physics CenterES10 papers
- Laboratoire de physique des SolidesFR10 papers
- University of British ColumbiaCA10 papers
37 papers · 1 filter
Light-induced pseudo-magnetic fields in three-dimensional topological semimetals
Arpit Raj, Swati Chaudhary, Martin Rodriguez-Vega +3
In this work, we show that suitably designed spatially varying linearly polarized light provides a versatile route to generate and control pseudo-magnetic fields in Weyl semimetals…
Interlayer charge transfer induced by electronic instabilities in the natural van der Waals hetrostructure 4H-TaS
R. Mathew Roy, X. Feng, M. Wenzel +6
The natural van der Waals heterostructure 4H-TaS composed of alternating 1T- and 1H-TaS layers serves as a platform for investigating the electronic correlations and la…
Raman tensor for two-dimensional massive Dirac fermions
Selçuk Parlak, Ion Garate
Raman spectroscopy is a valuable characterization tool for two-dimensional materials. Starting from model Hamiltonians for Chern insulators and magnetized monolayers of transition…
Phononic dynamical axion in magnetic Dirac insulators
M. Nabil Y. Lhachemi, Ion Garate
In cosmology, the axion is a hypothetical particle that is currently considered as candidate for dark matter. In condensed matter, a counterpart of the axion (the "axion quasiparti…
Detection of phonon helicity in nonchiral crystals with Raman scattering
Selçuk Parlak, Sayandip Ghosh, Ion Garate
Recently, it has been predicted that the Berry curvature of electrons can produce an angular momentum for phonons. In systems with time-reversal symmetry, the direction of the phon…
Unconventional Resistivity Scaling in Topological Semimetal CoSi
Shang-Wei Lien, Ion Garate, Utkarsh Bajpai +9
Nontrivial band topologies in semimetals lead to robust surface states that can contribute dominantly to the total conduction. This may result in reduced resistivity with decreasin…
Van Roosbroeck's equations with topological terms: the case of Weyl semimetals
Pierre-Antoine Graham, Simon Bertrand, Michaël Bédard +2
Van Roosbroeck's equations constitute a versatile tool to determine the dynamics of electrons under time- and space-dependent perturbations. Extensively utilized in ordinary semico…
Impurities in 3D quadratic band-touching Luttinger semimetals : Friedel and RKKY oscillations
Louis J. Godbout, Serguei Tchoumakov, William Witczak-Krempa
We investigate the response of 3D Luttinger semimetals to localized charge and spin impurities as a function of doping. The strong spin-orbit coupling of these materials strongly i…
Phonon magnetochiral effect of band-geometric origin in Weyl semimetals
Sanghita Sengupta, M. Nabil Y. Lhachemi, Ion Garate
The phonon magnetochiral effect consists of a nonreciprocity in the velocity or attenuation of acoustic waves when they propagate parallel and antiparallel to an external magnetic…
Complete optical valley polarization in Weyl semimetals in strong magnetic fields
Simon Bertrand, Jean-Michel Parent, René Côté +1
We present a theory of an optically induced valley polarization in an interacting, time-reversal symmetric Weyl semimetal placed under strong magnetic fields. Because the applicati…
Dielectric and electronic properties of three-dimensional Luttinger semimetals with a quadratic band touching
Serguei Tchoumakov, William Witczak-Krempa
Due to strong spin-orbit coupling, charge carriers in three-dimensional quadratic band touching Luttinger semimetals have non-trivial wavefunctions characterized by a pseudospin of…
Influence of Landau levels in the phonon dispersion of Weyl semimetals
Pierre Rinkel, Pedro L. S. Lopes, Ion Garate
Weyl semimetals display unusual electronic transport properties when placed under magnetic fields. Here, we investigate how magnetic fields alter the dynamics of long wavelength la…
Optical absorption in interacting and nonlinear Weyl semimetals
Simon Bertrand, Ion Garate, René Côté
It has been recently predicted that the interplay between Coulomb interactions and Berry curvature can produce interesting optical phenomena in topologically nontrivial two-dimensi…
Tight-binding theory of NMR shifts in topological insulators Bi2Se3 and Bi2Te3
Samuel Boutin, Jorge Ramírez-Ruiz, Ion Garate
Motivated by recent nuclear magnetic resonance (NMR) experiments, we present a microscopic sp3 tight-binding model calculation of the NMR shifts in bulk Bi2Se3, and Bi2Te3. We comp…
Se nuclear magnetic resonance of topological insulator BiSe
Nataliya M. Georgieva, Damian Rybicki, Robin Guehne +5
Topological insulators (TIs) constitute a new class of materials with an energy gap in the bulk and peculiar metallic states on the surface. To date, most experiments have focused…
Intraband and interband spin-orbit torques in non-centrosymmetric ferromagnets
Hang Li, H. Gao, Liviu P. Zârbo +8
Intraband and interband contributions to the current-driven spin-orbit torque in magnetic materials lacking inversion symmetry are theoretically studied using Kubo formula. In addi…
Probing surface states exposed by crystal terminations at arbitrary orientations of three-dimensional topological insulators
Sthitadhi Roy, Kush Saha, Sourin Das
The topological properties of the bulk band structure of a three-dimensional topological insulator (TI) manifest themselves in the form of metallic surface states. In this paper, w…
Spin-Polarized Tunneling Study on Spin-Momentum Locking in the Topological Insulators
Luqiao Liu, A. Richardella, Ion Garate +3
We demonstrate that the charge-spin conversion efficiency of topological insulators (TI) can be experimentally determined by injecting spin-polarized tunneling electrons into a TI.…
Experimental evidence and control of the bulk-mediated intersurface coupling in topological insulator Bi2Te2Se nanoribbons
Zhaoguo Li, Ion Garate, Jian Pan +14
Nearly a decade after the discovery of topological insulators (TIs), the important task of identifying and characterizing their topological surface states through electrical transp…
Spiral graphone and one sided fluorographene nano-ribbons
M. Neek-Amal, J. Beheshtian, F. Shayeganfar +3
The instability of a free-standing one sided hydrogenated/fluorinated graphene nano-ribbon, i.e. graphone/fluorographene, is studied using ab-initio, semiempirical and large scale…
Bromophenyl functionalization of carbon nanotubes : an ab initio study
Jason Beaudin, Jonathan Laflamme Janssen, Nicholas D. M. Hine +2
We study the thermodynamics of bromophenyl functionalization of carbon nanotubes with respect to diameter and metallic/insulating character using density-functional theory (DFT). O…
Doping of C-induced electronic states in BN nanopeapods
Vladimir Timoshevskii, Michel Cote
We report the results of \textit{ab initio} simulations of the electronic properties of a chain of C molecules encapsulated in a boron nitride nanotube - so called BN-nanope…
Carrier thermal escape in families of InAs/InP self-assembled quantum dots
Guillaume Gélinas, Ali Lanacer, Richard Leonelli +3
We investigate the thermal quenching of the multimodal photoluminescence from InAs/InP (001) self-assembled quantum dots. The temperature evolution of the photoluminescence spectra…
Ultrastrong coupling regime of cavity QED with phase-biased flux qubits
J. Bourassa, J. M. Gambetta, A. A. Abdumalikov +3
We theoretically study a circuit QED architecture based on a superconducting flux qubit directly coupled to the center conductor of a coplanar waveguide transmission-line resonator…