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  • Letter
  • Open Access

Real-time and space visualization of excitations of the ν=1/3 fractional quantum Hall edge

Akinori Kamiyama1, Masahiro Matsuura1, John N. Moore1, Takaaki Mano2, Naokazu Shibata1, and Go Yusa1,3,*

  • 1Department of Physics, Tohoku University, Sendai 980-8578, Japan
  • 2National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, Japan
  • 3Center for Spintronics Research Network, Tohoku University, Sendai 980-8577, Japan

  • *yusa@tohoku.ac.jp
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Phys. Rev. Research 4, L012040 – Published 28 March, 2022

DOI: https://doi.org/10.1103/PhysRevResearch.4.L012040

Abstract

We present scanning optical stroboscopic confocal microscopy and spectroscopy measurements wherein three degrees of freedom, namely, energy, real space, and real time, are resolvable. The edge-state propagation is detected as a temporal change in the optical response in the downstream edge. We succeeded in visualizing the excited states of the most fundamental fractional quantum Hall state and the collective excitations near the edge. The results verify the current understanding of the edge excitation and also point toward further dynamics outside the edge channel.

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References (33)

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Phys. Rev. Research 4, L012040– Published 28 March, 2022
  • Received 31 August 2021
  • Revised 17 February 2022
  • Accepted 22 February 2022
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