22 citations · 29 across the 2 of their papers we have counts for
3 papers · 1 filter
Massless multifold Hopf semimetals
Ansgar Graf, Frédéric Piéchon
Three-dimensional topological semimetals exhibit linear energy band crossing points that act as monopoles of Berry curvature. Here, an alternative class of semimetals is introduced…
Theory of magnetotransport in shaped topological insulator nanowires
Ansgar Graf, Raphael Kozlovsky, Klaus Richter +1
We show that shaped topological insulator (TI) nanowires, i.e. such that their cross-section radius varies along the wire length, can be tuned into a number of different transport…
Magnetoconductance, Quantum Hall Effect, and Coulomb Blockade in Topological Insulator Nanocones
Raphael Kozlovsky, Ansgar Graf, Denis Kochan +2
Magnetotransport through cylindrical topological insulator (TI) nanowires is governed by the interplay between quantum confinement and geometric (Aharonov-Bohm and Berry) phases. H…