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
79 papers · 1 filter
Tight-binding and density-functional study of the Raman tensor in two-dimensional massive Dirac fermion systems
Selçuk Parlak, Abhishek Kumar, Runhan Li +2
Recently, two unusual features were theoretically predicted for the Raman response of out-of-plane phonons in magnetic two-dimensional materials hosting massive Dirac fermions. Fir…
Symmetry-breaking-induced topology in FeSe
Mikel García-Díez, Jonas B. Profe, Augustin Davignon +3
FeSe has been one of the most intensively studied iron-based superconductors over the past two decades, exhibiting a wide range of phenomena such as unconventional superconductivit…
Symmetry-broken ground state and phonon mediated superconductivity in Kagome CsVSb
Manex Alkorta, Martin Gutierrez-Amigo, Ðorđe Dangić +4
The newly discovered family of non-magnetic Kagome metals AVSb (A=K,Rb,Cs) provides a unique platform for exploring the interplay between charge density wave (CDW) order, s…
Emergent chirality and enantiomeric selectivity in layered NbOX crystals
Martin Gutierrez-Amigo, Claudia Felser, Ion Errea +1
The spontaneous emergence of chirality in crystalline solids has profound implications for electronic, optical, and topological properties, making the control of chiral phases a ce…
Second-Order Raman Scattering in Exfoliated Black Phosphorus
Alexandre Favron, Félix Antoine Goudreault, Vincent Gosselin +7
Second-order Raman scattering has been extensively studied in carbon-based nanomaterials, \emph{e.g.} nanotube and graphene, because it activates normally forbidden Raman modes tha…
Role of magnetic ions in the thermal Hall effect of the paramagnetic insulator TmVO
Ashvini Vallipuram, Lu Chen, Emma Campillo +9
In a growing number of materials, phonons have been found to generate a thermal Hall effect, but the underlying mechanism remains unclear. Inspired by previous studies that reveale…
Evaluating approaches for on-the-fly machine learning interatomic potential for activated mechanisms sampling with the activation-relaxation technique nouveau
Eugène Sanscartier, Félix Saint-Denis, Karl-Étienne Bolduc +1
In the last few years, much efforts have gone into developing universal machine-learning potentials able to describe interactions for a wide range of structures and phases. Yet, as…
Probing Hyperbolic and Surface Phonon-Polaritons in 2D materials using Raman Spectroscopy
A. Bergeron, C. Gradziel, R. Leonelli +1
The hyperbolic dispersion relation of phonon-polaritons (PhPol) provides high-momentum states, highly directional propagation, subdiffractional confinement, large optical density o…
Size-Dependent Grain Boundary Scattering in Topological Semimetals
Nicholas A. Lanzillo, Utkarsh Bajpai, Ion Garate +1
We assess the viability of topological semimetals for application in advanced interconnect technology, where conductor size is on the order of a few nanometers and grain boundaries…
Fröhlich polaron effective mass and localization length in cubic materials: degenerate and anisotropic electronic bands
Bogdan Guster, Pedro Melo, Bradley A. A. Martin +7
Polarons, that is, charge carriers correlated with lattice deformations, are ubiquitous quasiparticles in semiconductors, and play an important role in electrical conductivity. To…
Advanced materials for magnetic cooling:fundamentals and practical aspects
Mohamed Balli, Serge Jandl, Patrick Fournier +1
Over the last two decades, the research activities on magnetocalorics have been exponentially increased leading to the discovery of a wide category of materials including intermeta…
Predominance of non-adiabatic effects in zero-point renormalization of the electronic band gap
Anna Miglio, Véronique Brousseau-Couture, Emile Godbout +6
Electronic and optical properties of materials are affected by atomic motion through the electron-phonon interaction: not only band gaps change with temperature, but even at absolu…
Real Space Raman Spectroscopy of Graphene Isotope Superlattices
Eric Whiteway, Martin Lee, Michael Hilke
We report the Raman spectroscopy of 12C/13C graphene isotope superlattices synthesized by chemical vapour deposition. At large periods the Raman spectra corresponds to the sum of t…
Temperature dependence of the topological phase transition of BiTeI from first principles
Véronique Brousseau-Couture, Gabriel Antonius, Michel Côté
A topological phase transition from a trivial insulator to a topological insulator requires the bulk band gap to vanish. In the case of noncentrosymmetric materials,…
Unusual rotating magnetocaloric effect in the hexagonal ErMnO3 single crystal
M. Balli, S. Jandl, P. Fournier +2
It is known that orthorhombic RMnO3 multiferroics (R = magnetic rare earth) with low symmetry exhibit a large rotating magnetocaloric effect because of their strong magnetocrystall…
Analysis of the magnetic and magnetocaloric properties of ALaFeMnO6 (A= Sr, Ba and Ca) double perovskites
N. Brahiti, M. Abbasi Eskandari, M. Balli +4
In previous studies, we have reported that double perovskite La2NiMnO6 presents a non-negligible potential for room temperature magnetocaloric tasks. With the aim of improving even…
Origin and evolution of surface spin current in topological insulators
André Dankert, Priyamvada Bhaskar, Dmitrii Khokhriakov +6
The Dirac surface states of topological insulators offer a unique possibility for creating spin polarized charge currents due to the spin-momentum locking. Here we demonstrate that…
NMR in an electric field: A bulk probe of the hidden spin and orbital polarizations
Jorge Ramírez-Ruiz, Samuel Boutin, Ion Garate
Recent theoretical work has established the presence of hidden spin and orbital textures in non-magnetic materials with inversion symmetry. Here, we propose that these textures can…
Equation of state, phonons, and lattice stability of ultra-fast warm dense matter
Louis Harbour, Chandre M. Dharma-wardana, Dennis D. Klug +1
Using the two-temperature model for ultrafast matter (UFM), we compare the equation of state, pair-distribution functions , and phonons using the neutral pseudoatom (NPA) mod…
Excitonic coupling dominates the homogeneous photoluminescence excitation linewidth in semicrystalline polymeric semiconductors
Pascal Grégoire, Eleonora Vella, Matthew Dyson +6
We measure the homogeneous excitation linewidth of regioregular poly(3-hexylthiophene), a model semicrystalline polymeric semiconductor, by means of two-dimensional coherent photol…
Pair potentials for warm dense matter and their application to x-ray Thomson scattering in aluminum and beryllium
Louis Harbour, M. W. Chandre Dharma-wardana, Dennis D. Klug +1
Ultrafast laser experiments yield increasingly reliable data on warm dense matter, but their interpretation requires theoretical models. We employ an efficient density functional n…
Probing polaron excitation spectra in organic semiconductors by photoinduced-absorption-detected two-dimensional coherent spectroscopy
Hao Li, Aurelie Gauthier-Houle, Pascal Gregoire +3
We report a theoretical description and experimental implementation of a novel two-dimensional coherent excitation spectroscopy based on quasi-steady-state photoinduced absorption…
A critical assessment of models of pair-interactions and screening used in analyzing recent warm-dense matter (WDM) experiments
L. Harbour, M. W. C. Dharma-wardana, D. D. Klug +1
Ultra-fast laser experiments yield increasingly reliable data on warm-dense matter (WDM), but rely on entrenched simplistic theoretical models. We re-analyze two topical experiment…
Do ultrafast exciton-polaron decoherence dynamics govern photocarrier generation efficiencies in polymer solar cells?
E. Vella, H. Li, P. Gregoire +7
All-organic-based photovoltaic solar cells have attracted considerable attention because of their low-cost processing and short energy payback time. In such systems the primary dis…