91 citations · 337 across the 8 of their papers we have counts for
8 papers
Signatures of interaction-induced helical gaps in nanowire quantum point contacts
S. Heedt, N. Traverso Ziani, F. Crépin +6
Spin-momentum locking in a semiconductor device with strong spin-orbit coupling (SOC) is a fundamental goal of nanoscale spintronics and an important prerequisite for the formation…
Evidence for broken Galilean invariance at the quantum spin Hall edge
Florian Geissler, François Crépin, Björn Trauzettel
We study transport properties of the helical edge channels of a quantum spin Hall (QSH) insulator, in the presence of electron-electron interactions and weak, local Rashba spin-orb…
Flux sensitivity of quantum spin Hall rings
François Crépin, Björn Trauzettel
We analyse the periodicity of persistent currents in quantum spin Hall loops, partly covered with an -wave superconductor, in the presence of a flux tube. Much like in normal (n…
Odd-Frequency Triplet Superconductivity at the Helical Edge of a Toplogical Insulator
François Crépin, Pablo Burset, Björn Trauzettel
Non-local pairing processes at the edge of a two-dimensional topological insulator in proximity to an -wave superconductor are usually suppressed by helicity. However, additiona…
Evidence for Majorana bound states in transport properties of hybrid structures based on helical liquids
François Crépin, Björn Trauzettel, Fabrizio Dolcini
Majorana bound states can emerge as zero-energy modes at the edge of a two-dimensional topological insulator in proximity to an ordinary s-wave superconductor. The presence of an a…
Even-odd effects in NSN scattering problems: Application to graphene nanoribbons
François Crépin, Hans Hettmansperger, Patrik Recher +1
We study crossed Andreev reflection (CAR) of electrons or holes in normal metal-superconductor-normal metal junctions and highlight some very strong effects of the underlying latti…
Renormalization group approach for the scattering off a single Rashba impurity in a helical liquid
François Crépin, Jan Carl Budich, Fabrizio Dolcini +2
The occurrence of two-particle inelastic backscattering has been conjectured in helical edge states of topological insulators and is expected to alter transport. In this Letter, by…
Incompressible states of a two-component Fermi gas in a double-well optical lattice
François Crépin, Roberta Citro, Pascal Simon
We propose a scheme to investigate the effect of frustration on the magnetic phase transitions of cold atoms confined in an optical lattice. We also demonstrate how to get two-leg…