Observation of a Biexciton Wigner Molecule by Fractional Optical Aharonov-Bohm Oscillations in a Single Quantum Ring

Title
Observation of a Biexciton Wigner Molecule by Fractional Optical Aharonov-Bohm Oscillations in a Single Quantum Ring
Authors
한일기최원준송진동Hee Dae KimRin OkuyamaKwangseuk KyhmMikio EtoRobert A. TaylorAurelien L. NicoletMarek PotemskiGilles NoguesLe Si DangKu-Chul JeJongsu KimJi-Hoon KyhmKyu Hyoek YoenEun Hye LeeJun Young Kim
Keywords
Aharonov-Bohm Oscillations; Quantum Ring; GaAs; Biexciton Wigner Molecule
Issue Date
2016-01
Publisher
Nano letters
Citation
VOL 16, NO 1-33
Abstract
The Aharonov-Bohm effect in ring structures in the presence of electronic correlation and disorder is an open issue. We report novel oscillations of a strongly correlated exciton pair, similar to a Wigner molecule, in a single nanoquantum ring, where the emission energy changes abruptly at the transition magnetic field with a fractional oscillation period compared to that of the exciton, a so-called fractional optical Aharonov-Bohm oscillation. We have also observed modulated optical Aharonov-Bohm oscillations of an electron-hole pair and an anticrossing of the photoluminescence spectrum at the transition magnetic field, which are associated with disorder effects such as localization, built-in electric field, and impurities.
URI
http://pubs.kist.re.kr/handle/201004/65010
ISSN
1530-6984
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KIST Publication > Article
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