Emergent quantum Hall effects below 50 mT in a two-dimensional topological insulator

  title={Emergent quantum Hall effects below 50 mT in a two-dimensional topological insulator},
  author={Saquib Shamim and Wouter Beugeling and Jan B{\"o}ttcher and Pragya Shekhar and Andreas Budewitz and Philipp Leubner and Lukas Lunczer and Ewelina M. Hankiewicz and Hartmut Buhmann and Laurens W. Molenkamp},
  journal={Science Advances},
Quantum Hall effects emerge at very low magnetic fields from helical edge channels in topological HgTe quantum wells. The realization of the quantum spin Hall effect in HgTe quantum wells has led to the development of topological materials, which, in combination with magnetism and superconductivity, are predicted to host chiral Majorana fermions. However, the large magnetization in conventional quantum anomalous Hall systems makes it challenging to induce superconductivity. Here, we report two… Expand
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