380 citations · 2.5k across the 21 of their papers we have counts for
9 papers · 1 filter
Imaging tunable quantum Hall broken-symmetry orders in graphene
Alexis Coissard, David Wander, Hadrien Vignaud +9
When electrons populate a flat band their kinetic energy becomes negligible, forcing them to organize in exotic many-body states to minimize their Coulomb energy. The zeroth Landau…
Helical quantum Hall phase in graphene on SrTiO
Louis Veyrat, Corentin Déprez, Alexis Coissard +8
The ground state of charge neutral graphene under perpendicular magnetic field was predicted to be a quantum Hall topological insulator with a ferromagnetic order and spin-filtered…
Low Magnetic Field Regime of a Gate-Defined Constriction in High-Mobility Graphene
Louis Veyrat, Anna Jordan, Katrin Zimmermann +5
We report on the evolution of the coherent electronic transport through a gate-defined constriction in a high-mobility graphene device from ballistic transport to quantum Hall regi…
Joule overheating poisons the fractional ac Josephson effect in topological Josephson junctions
K. Le Calvez, L. Veyrat, F. Gay +4
Topological Josephson junctions designed on the surface of a 3D-topological insulator (TI) harbor Majorana bound states (MBS's) among a continuum of conventional Andreev bound stat…
Tunable transmission of quantum Hall edge channels with full degeneracy lifting in split-gated graphene devices
Katrin Zimmermann, Anna Jordan, Frédéric Gay +6
Charge carriers in the quantum Hall regime propagate via one-dimensional conducting channels that form along the edges of a two-dimensional electron gas. Controlling their transmis…
Transport through graphene on SrTiO3
N. J. G. Couto, B. Sacepe, A. F. Morpurgo
We report transport measurements through graphene on SrTiO3 substrates as a function of magnetic field B, carrier density n, and temperature T. The large dielectric constant of SrT…