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

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 trans...

Full description

Saved in:
Bibliographic Details
Published in:Nano letters 2016-01, Vol.16 (1), p.27-33
Main Authors: Kim, Hee Dae, Okuyama, Rin, Kyhm, Kwangseuk, Eto, Mikio, Taylor, Robert A, Nicolet, Aurelien L, Potemski, Marek, Nogues, Gilles, Dang, Le Si, Je, Ku-Chul, Kim, Jongsu, Kyhm, Ji-Hoon, Yoen, Kyu Hyoek, Lee, Eun Hye, Kim, Jun Young, Han, Il Ki, Choi, Wonjun, Song, Jindong
Format: Article
Language:English
Subjects:
Condensed Matter
Physics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:1530-6984
1530-6992
DOI:10.1021/acs.nanolett.5b02419