Synthesizing a ν=2/3 fractional quantum Hall effect edge state from counter-propagating ν=1 and ν=1/3 states

Yonatan Cohen, Yuval Ronen, Wenmin Yang, Daniel Banitt, Jinhong Park, Moty Heiblum (), Alexander D. Mirlin, Yuval Gefen and Vladimir Umansky
Additional contact information
Yonatan Cohen: Weizmann Institute of Science
Yuval Ronen: Weizmann Institute of Science
Wenmin Yang: Weizmann Institute of Science
Daniel Banitt: Weizmann Institute of Science
Jinhong Park: Weizmann Institute of Science
Moty Heiblum: Weizmann Institute of Science
Alexander D. Mirlin: Karlsruhe Institute of Technology
Yuval Gefen: Weizmann Institute of Science
Vladimir Umansky: Weizmann Institute of Science

Nature Communications, 2019, vol. 10, issue 1, 1-6

Abstract: Abstract Topological edge-reconstruction occurs in hole-conjugate states of the fractional quantum Hall effect. The frequently studied filling factor, ν = 2/3, was originally proposed to harbor two counter-propagating modes: a downstream v = 1 and an upstream v = 1/3. However, charge equilibration between these two modes always led to an observed downstream v = 2/3 charge mode accompanied by an upstream neutral mode. Here, we present an approach to synthetize a v = 2/3 edge mode from its basic counter-propagating charged constituents, allowing a controlled equilibration between the two counter-propagating charge modes. This platform is based on a carefully designed double-quantum-well, which hosts two populated electronic sub-bands (lower and upper), with corresponding filling factors, vl and vu. By separating the 2D plane to two gated intersecting halves, each with different fillings, counter-propagating chiral modes can be formed along the intersection line. Equilibration between these modes can be controlled with the top gates’ voltage and the magnetic field.

Date: 2019
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-019-09920-5 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-09920-5

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-019-09920-5

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().