Interacting topological edge channels

@article{Strunz2019InteractingTE,
  title={Interacting topological edge channels},
  author={Jonas Strunz and Jonas Wiedenmann and Christoph Fleckenstein and Lukas Lunczer and Wouter Beugeling and Valentin L M{\"u}ller and Pragya Shekhar and Niccol{\`o} Traverso Ziani and Saquib Shamim and Johannes Kleinlein and Hartmut Buhmann and Bjorn Trauzettel and Laurens W. Molenkamp},
  journal={Nature Physics},
  year={2019},
  volume={16},
  pages={83-88}
}
Electrical currents in a quantum spin Hall insulator are confined to the boundary of the system. The charge carriers behave as massless relativistic particles whose spin and momentum are coupled to each other. Although the helical character of those states is already established by experiments, there is an open question regarding how those edge states interact with each other when they are brought into close spatial proximity. We employ an inverted HgTe quantum well to guide edge channels from… 

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