Published July 26, 2019
| Submitted + Published
Journal Article
Open
Quantum anomalous parity Hall effect in magnetically disordered topological insulator films
- Creators
- Haim, Arbel
- Ilan, Roni
-
Alicea, Jason
Abstract
In magnetically doped thin-film topological insulators, aligning the magnetic moments generates a quantum anomalous Hall phase supporting a single chiral edge state. We show that as the system demagnetizes, disorder from randomly oriented magnetic moments can produce a "quantum anomalous parity Hall" phase with helical edge modes protected by a unitary reflection symmetry. We further show that introducing superconductivity, combined with selective breaking of reflection symmetry by a gate, allows for creation and manipulation of Majorana zero modes via purely electrical means and at zero applied magnetic field.
Additional Information
© 2019 American Physical Society. Received 21 March 2019; published 22 July 2019. We thank A. Thomson for her insightful comments. We acknowledge support from the Army Research Office under Grant Award No. W911NF-17-1-0323 (J. A.), the NSF through Grant No. DMR-1723367 (J. A.), the Caltech Institute for Quantum Information and Matter, an NSF Physics Frontiers Center with support of the Gordon and Betty Moore Foundation through Grant No. GBMF1250 (J. A.), and the Walter Burke Institute for Theoretical Physics at Caltech (J. A. and A. H.).Attached Files
Published - PhysRevLett.123.046801.pdf
Submitted - 1903.05089.pdf
Files
1903.05089.pdf
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Additional details
- Eprint ID
- 95009
- Resolver ID
- CaltechAUTHORS:20190426-083534979
- Army Research Office (ARO)
- W911NF-17-1-0323
- NSF
- DMR-1723367
- Institute for Quantum Information and Matter (IQIM)
- Gordon and Betty Moore Foundation
- GBMF1250
- Walter Burke Institute for Theoretical Physics, Caltech
- Created
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2019-04-26Created from EPrint's datestamp field
- Updated
-
2021-11-16Created from EPrint's last_modified field
- Caltech groups
- Institute for Quantum Information and Matter, Walter Burke Institute for Theoretical Physics