Realization of a vertical topological p–n junction in epitaxial Sb2Te3/Bi2Te3 heterostructures

  title={Realization of a vertical topological p–n junction in epitaxial Sb2Te3/Bi2Te3 heterostructures},
  author={Markus Eschbach and Ewa Mlynczak and Jens Kellner and J{\"o}rn Kampmeier and Martin Lanius and Elmar Neumann and Christian Weyrich and Mathias Gehlmann and P. Gospodari{\vc} and Sven D{\"o}ring and Gregor Mussler and N. V. Demarina and Martina Luysberg and Gustav Bihlmayer and Thomas Sch{\"a}pers and L Plucinski and Stefan Bl{\"u}gel and Markus Morgenstern and Claus Michael Schneider and Detlev Gr{\"u}tzmacher},
  journal={Nature Communications},
Three-dimensional (3D) topological insulators are a new state of quantum matter, which exhibits both a bulk band structure with an insulating energy gap as well as metallic spin-polarized Dirac fermion states when interfaced with a topologically trivial material. There have been various attempts to tune the Dirac point to a desired energetic position for exploring its unusual quantum properties. Here we show a direct experimental proof by angle-resolved photoemission of the realization of a… Expand

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