Edge and bulk states in Weyl-orbit quantum Hall effect as studied by Corbino measurements
arXiv:2401.00224 · doi:10.7566/JPSJ.93.023706
Abstract
We investigate edge and bulk states in Weyl-orbit based quantum Hall effect by measuring a Corbino-type device fabricated from a topological Dirac semimetal (Cd1-xZnx)3As2 film. Clear quantum Hall plateaus are observed when measuring one-sided terminals of the Corbino-type device. This indicates that edge states of the Weyl-orbit quantum Hall effect form closed trajectories consisting of Fermi arcs and chiral zero modes independently on inner and outer sides. On the other hand, the bulk resistance does not diverge at fields where the quantum Hall plateau appears, suggesting that the Weyl orbits in the bulk region are not completely localized when applying electric current through the bulk region.
References in corpus (7)
- Observation of topological surface state quantum Hall effect in an intrinsic three-dimensional topological insulator
- Linear magnetoresistance caused by mobility fluctuations in the n-doped Cd3As2
- Quantum Hall Effect on Top and Bottom Surface States of Topological Insulator (Bi1-xSbx)2Te3 Films
- Quantum Hall states observed in thin films of Dirac semimetal Cd3As2
- Field-Tunable One-Sided Higher-Order Topological Hinge States in Dirac Semimetals
- Molecular beam epitaxy of three-dimensionally thick Dirac semimetal Cd3As2 films
- Ferromagnetic state above room temperature in a proximitized topological Dirac semimetal