Electron-Hole Interference in an Inverted-Band Semiconductor Bilayer

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2020
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Karalic, Matija
Štrkalj, Antonio
Masseroni, Michele
Chen, Wei
Mittag, Christopher
Tschirky, Thomas
Wegscheider, Werner
Ihn, Thomas
Ensslin, Klaus
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Physical Review X. American Physical Society (APS). 2020, 10(3), 031007. eISSN 2160-3308. Available under: doi: 10.1103/PhysRevX.10.031007
Zusammenfassung

Electron optics in the solid state promises new functionality in electronics through the possibility of realizing nano- and micrometer-sized interferometers, lenses, collimators, and beam splitters that manipulate electrons instead of light. Until now, however, such functionality has been demonstrated exclusively in one-dimensional devices, such as in nanotubes, and in graphene-based devices operating with p−n junctions. In this work, we describe a novel mechanism for realizing electron optics in two dimensions. By studying a two-dimensional Fabry-Perot interferometer based on a resonant cavity formed in an InAs/GaSb double quantum well using p−n junctions, we establish that electron-hole hybridization in band-inverted systems can facilitate coherent interference. With this discovery, we expand the field of electron optics in two dimensions to encompass materials that exhibit band inversion and hybridization.

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ISO 690KARALIC, Matija, Antonio ŠTRKALJ, Michele MASSERONI, Wei CHEN, Christopher MITTAG, Thomas TSCHIRKY, Werner WEGSCHEIDER, Thomas IHN, Klaus ENSSLIN, Oded ZILBERBERG, 2020. Electron-Hole Interference in an Inverted-Band Semiconductor Bilayer. In: Physical Review X. American Physical Society (APS). 2020, 10(3), 031007. eISSN 2160-3308. Available under: doi: 10.1103/PhysRevX.10.031007
BibTex
@article{Karalic2020Elect-55218,
  year={2020},
  doi={10.1103/PhysRevX.10.031007},
  title={Electron-Hole Interference in an Inverted-Band Semiconductor Bilayer},
  number={3},
  volume={10},
  journal={Physical Review X},
  author={Karalic, Matija and Štrkalj, Antonio and Masseroni, Michele and Chen, Wei and Mittag, Christopher and Tschirky, Thomas and Wegscheider, Werner and Ihn, Thomas and Ensslin, Klaus and Zilberberg, Oded},
  note={Article Number: 031007}
}
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