Kim, H. D. Kyhm, K. Taylor, R. A. Nicolet, A. A. L. Potemski, M. Nogues, G. Je, K. C. Lee, E. H. Song, J. D. 2024-01-20T11:05:06Z 2024-01-20T11:05:06Z 2021-09-05 2013-10-21 0003-6951 https://pubs.kist.re.kr/handle/201004/127537 We observe excited exciton and biexciton states of localised excitons in an anisotropic quantum ring, where large polarisation asymmetry supports the presence of a crescent-like localised structure. We also find that saturation of the localised ground state exciton with increasing excitation can be attributed to relatively fast dissociation of biexcitons (similar to 430 ps) compared to slow relaxation from the excited state to the ground state (similar to 1000 ps). As no significant excitonic Aharonov-Bohm oscillations occur up to 14 T, we conclude that phase coherence around the rim is inhibited as a consequence of height anisotropy in the quantum ring. (C) 2013 AIP Publishing LLC. English AMER INST PHYSICS Excited exciton and biexciton localised states in a single quantum ring Article 10.1063/1.4826479 1 APPLIED PHYSICS LETTERS, v.103, no.17 APPLIED PHYSICS LETTERS 103 17 scie scopus 000326455100061 2-s2.0-84887097023 Physics, Applied Physics Article GaAs nano ring exciton biexciton