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
14 papers · 1 filter
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.…
Surface-to-bulk scattering in topological insulator films
Kush Saha, Ion Garate
We present a quantitative microscopic theory of the disorder- and phonon-induced coupling between surface and bulk states in topological insulator (TI) films. We find a simple stru…
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…
Switching of magnetic domains reveals evidence for spatially inhomogeneous superconductivity
Simon Gerber, Marek Bartkowiak, Jorge L. Gavilano +8
The interplay of magnetic and charge fluctuations can lead to quantum phases with exceptional electronic properties. A case in point is magnetically-driven superconductivity, where…
Efficient dielectric matrix calculations using the Lanczos algorithm for fast many-body implementations
Jonathan Laflamme Janssen, Bruno Rousseau, Michel Côté
We present a implementation that assesses the two major bottlenecks of traditional plane-waves implementations, the summations over conduction states and the inversion of…
Probing potential energy surface exploration strategies for complex systems
Gawonou Kokou N'Tsouaglo, Laurent Karim Béland, Jean-François Joly +3
The efficiency of minimum-energy configuration searching algorithms is closely linked to the energy landscape structure of complex systems. Here we characterize this structure by f…
Strain effect and intermixing at the Si surface: A hybrid quantum and molecular mechanics study
Laurent Karim Béland, Eduardo Machado-Charry, Pascal Pochet +1
We investigate Ge mixing at the Si(001) surface and characterize the Si(001) reconstruction by means of hybrid quantum and molecular mechanics calculations (QM/MM). Avo…
Understanding long-time vacancy aggregation in iron: a kinetic activation-relaxation technique study
Peter Brommer, Laurent Karim Béland, Jean-François Joly +1
Vacancy diffusion and clustering processes in body-centered-cubic (bcc) Fe are studied using the kinetic activation-relaxation technique (k-ART), an off-lattice kinetic Monte Carlo…
Role of electron-phonon interaction in a magnetically driven mechanism for superconductivity
Hassan Bakrim, Claude Bourbonnais
We use the renormalization group method to examine the effect of phonon mediated interaction on d-wave superconductivity, as driven by spin fluctuations in a quasi-one-dimensional…
Phonon-induced topological insulation
Kush Saha, Ion Garate
We develop an approximate theory of phonon-induced topological insulation in Dirac materials. In the weak coupling regime, long wavelength phonons may favor topological phases in D…
Lazy skip lists, a new algorithm for fast hybridization-expansion quantum Monte Carlo
P. Sémon, Chuck-Hou Yee, Kristjan Haule +1
The solution of a generalized impurity model lies at the heart of electronic structure calculations with dynamical mean-field theory (DMFT). In the strongly-correlated regime, the…
Ergodicity of the Hybridization-Expansion Monte Carlo Algorithm for Broken-Symmetry States
P. Sémon, G. Sordi, A. -M. S. Tremblay
With the success of dynamical mean field theories, solvers for quantum-impurity problems have become an important tool for the numerical study of strongly correlated systems. Conti…
Evidence for SrHo2O4 and SrDy2O4 as model J1-J2 zig-zag chain materials
Amy Poole, Vladimir Pomjakushin, Anne-Christine Uldry +9
Neutron diffraction and inelastic spectroscopy is used to characterize the magnetic Hamiltonian of SrHo2O4 and SrDy2O4. Through a detailed computation of the crystal-field levels w…