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Optical Aharonov-Bohm Oscillations with Disorder Effects and Wigner Molecule in a Single GaAs/AlGaAs Quantum Ring

  • K. Kyhm*
  • , H. D. Kim
  • , R. Okuyama
  • , M. Eto
  • , K. C. Je
  • , R. A. Taylor
  • , G. Nogues
  • , L. S. Dang
  • , A. A.L. Nicholet
  • , M. Potemski
  • , J. S. Kim
  • , J. D. Song
  • *Corresponding author for this work
  • Pusan National University
  • Keio University
  • SS Cyril and Methodius University in Skopje
  • University of Oxford
  • Institute Néel CNRS
  • CNRS
  • Yeungnam University
  • Korea Institute of Science and Technology

Research output: Contribution to conferenceChapterpeer-review

Abstract

The optical Aharonov-Bohm effect in a single quantum ring is associated with disorder effects. In the presence of structure anisotropy, localisation, internal electric field, and impurity scattering, optical Aharonov-Bohm oscillations of an electron-hole pair become modulated. Additionally, provided that a strongly correlated exciton pair is formed in a single quantum ring similar to the Wigner molecule, novel oscillations can be observed for increasing magnetic field. In this case, the biexciton emission energy changes abruptly at transition magnetic fields with a fractional oscillation period compared to that of the exciton, the so-called fractional optical Aharonov-Bohm oscillations.

Original languageEnglish
Title of host publicationNanoScience and Technology
PublisherSpringer Verlag
Pages231-254
Number of pages24
DOIs
StatePublished - 2018

Publication series

NameNanoScience and Technology
ISSN (Print)1434-4904

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