4 papers
Quantum confinement in semiconductor random alloys: a case study on Si/SiGe/Si
Daniel Dick, Florian Fuchs, Sibylle Gemming +1
Local composition fluctuations in random alloys become crucial when one or more dimensions are reduced to the nanoscale. Using extended Hückel theory, we study the semiconductor ra…
Graphene-capped bismuthene on SiC as a platform for correlated quantum spin Hall edge states
Huu Thoai Ngo, Zamin Mamiyev, Niclas Tilgner +4
Epitaxial bismuthene on SiC(0001) hosts symmetry-protected metallic edge states within a large bulk band gap, establishing it as a promising two-dimensional topological insulator f…
Reversible Switching of the Environment-Protected Quantum Spin Hall Insulator Bismuthene at the Graphene/SiC Interface
Niclas Tilgner, Susanne Wolff, Serguei Soubatch +8
Quantum Spin Hall Insulators (QSHI) have been extensively studied both theoretically and experimentally because they exhibit robust helical edge states driven by spin-orbit couplin…
Complex dynamics in circular and deformed bilayer graphene inspired billiards with anisotropy and strain
Lukas Seemann, Jana Lukin, Max Häßler +2
While billiard systems of various shapes have been used as paradigmatic model systems in the fields of nonlinear dynamics and quantum chaos, few studies have investigated anisotrop…