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Edge and bulk states in Weyl-orbit quantum Hall effect as studied by Corbino measurements

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arxiv 2401.00224 v1 pith:AK6ZE632 submitted 2023-12-30 cond-mat.mes-hall cond-mat.mtrl-scicond-mat.str-el

Yusuke Nakazawa , Ryosuke Kurihara , Masatoshi Miyazawa , Shinichi Nishihaya , Markus Kriener , Masashi Tokunaga , Masashi Kawasaki , Masaki Uchida This is my paper · ORCID
classification cond-mat.mes-hallcond-mat.mtrl-scicond-mat.str-el
keywords bulkhallquantumedgeeffectstatesweyl-orbitcorbino-type
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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.

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