Topological superconductivity and Majorana fermions in RKKY systems
We consider quasi-one-dimensional Ruderman-Kittel-Kasuya-Yosida (RKKY) systems in
proximity to an s-wave superconductor. We show that a 2 k F peak in the spin susceptibility …
proximity to an s-wave superconductor. We show that a 2 k F peak in the spin susceptibility …
Helical liquids in semiconductors
One-dimensional helical liquids can appear at boundaries of certain condensed matter
systems. Two prime examples are the edge of a quantum spin Hall insulator and the hinge …
systems. Two prime examples are the edge of a quantum spin Hall insulator and the hinge …
Effects of nuclear spins on the transport properties of the edge of two-dimensional topological insulators
The electrons in the edge channels of two-dimensional topological insulators can be
described as a helical Tomonaga-Luttinger liquid. They couple to nuclear spins embedded …
described as a helical Tomonaga-Luttinger liquid. They couple to nuclear spins embedded …
Manipulating Majorana zero modes on atomic rings with an external magnetic field
Non-Abelian quasiparticles have been predicted to exist in a variety of condensed matter
systems. Their defining property is that an adiabatic braid between two of them results in a …
systems. Their defining property is that an adiabatic braid between two of them results in a …
Possible evidence for helical nuclear spin order in gaas quantum wires
We present transport measurements of cleaved edge overgrowth GaAs quantum wires. The
conductance of the first mode reaches 2 e 2/h at high temperatures T≳ 10 K, as expected. As …
conductance of the first mode reaches 2 e 2/h at high temperatures T≳ 10 K, as expected. As …
Time-reversal soliton pairs in even spin Chern number higher-order topological insulators
Solitons formed through the one-dimensional mass-kink mechanism on the edges of two-
dimensional systems with nontrivial topology play an important role in the emergence of …
dimensional systems with nontrivial topology play an important role in the emergence of …
Antiferromagnetic nuclear spin helix and topological superconductivity in nanotubes
We investigate the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction arising from the
hyperfine coupling between localized nuclear spins and conduction electrons in interacting …
hyperfine coupling between localized nuclear spins and conduction electrons in interacting …
Evolution of the quantum Hall bulk spectrum into chiral edge states
One of the most intriguing and fundamental properties of topological systems is the
correspondence between the conducting edge states and the gapped bulk spectrum. Here …
correspondence between the conducting edge states and the gapped bulk spectrum. Here …
Multiple-scattering approach for multi-spin chiral magnetic interactions: application to the one-and two-dimensional Rashba electron gas
S Lounis - New Journal of Physics, 2020 - iopscience.iop.org
Various multi-spin magnetic exchange interactions (MEI) of chiral nature have been recently
unveiled. Owing to their potential impact on the realisation of twisted spin-textures, their …
unveiled. Owing to their potential impact on the realisation of twisted spin-textures, their …
Helical nuclear spin order in a strip of stripes in the quantum Hall regime
We investigate nuclear spin effects in a two-dimensional electron gas in the quantum Hall
regime modeled by a weakly coupled array of interacting quantum wires. We show that the …
regime modeled by a weakly coupled array of interacting quantum wires. We show that the …