期刊
PHYSICAL REVIEW B
卷 97, 期 24, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.97.245304
关键词
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资金
- Department of Energy [DE-SC0008630, DE-SC0010544]
- Department of Defense Office of Naval Research [N000141410339]
- National Science Foundation [DMR-1610139]
- Gordon and Betty Moore Foundation
- U.S. Department of Energy (DOE) [DE-SC0010544, DE-SC0008630] Funding Source: U.S. Department of Energy (DOE)
We propose an experimentally feasible platform to realize parafermions (high-order non-Abelian excitations) based on spin transitions in the fractional quantum Hall effect regime. As a proof of concept we demonstrate a local control of the spin transition at a filling factor 2/3 and formation of a conducting fractional helical domain wall (fhDW) along a gate boundary. Coupled to an s-wave superconductor these fhDWs are expected to support parafermionic excitations. We present exact diagonalization numerical studies of fhDWs and show that they indeed possess electronic and magnetic structures needed for the formation of parafermions. A reconfigurable network of fhDWs will allow manipulation and braiding of parafermionic excitations in multigate devices.
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