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Interplay of chiral and helical states in a quantum spin hall insulator lateral junction

Abstract:

We study the electronic transport across an electrostatically gated lateral junction in a HgTe quantum well, a canonical 2D topological insulator, with and without an applied magnetic field. We control the carrier density inside and outside a junction region independently and hence tune the number and nature of 1D edge modes propagating in each of those regions. Outside the bulk gap, the magnetic field drives the system to the quantum Hall regime, and chiral states propagate at the edge. In t...

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Publication status:
Published
Peer review status:
Peer reviewed

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Files:
  • (Accepted manuscript, pdf, 3.5MB)
Publisher copy:
10.1103/PhysRevLett.119.226401

Authors


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Institution:
University of Oxford
Division:
MPLS
Role:
Author
Helmholtz Foundation More from this funder
Elitenetzwerk Bayern IDK Topologische Isolatoren More from this funder
German Research Foundation More from this funder
Defense Advanced Research Project Agency More from this funder
Natural Science Foundation of China More from this funder
Publisher:
American Physical Society Publisher's website
Journal:
Physical Review Letters Journal website
Volume:
119
Article number:
226401
Publication date:
2017-11-29
Acceptance date:
2017-11-13
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Pubs id:
pubs:811691
UUID:
uuid:1242541b-1fe3-486e-831c-32c1c726b095
Local pid:
pubs:811691
Source identifiers:
811691
Deposit date:
2017-12-18

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