title: Self-assembly of concentric quantum double rings.
abstract: We demonstrate the self-assembled formation of concentric quantum double rings with high uniformity and excellent rotational symmetry using the droplet epitaxy technique. Varying the growth process conditions can control each ring's size. Photoluminescence spectra emitted from an individual quantum ring complex show peculiar quantized levels that are specified by the carriers' orbital trajectories.
authors.affiliation: Nanomaterials Laboratory, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan. MANO.Takaaki@nims.go.jp
authors.forename: Takaaki
authors.initials: T
authors.lastname: Mano
authors.forename: Takashi
authors.initials: T
authors.lastname: Kuroda
authors.forename: Stefano
authors.initials: S
authors.lastname: Sanguinetti
authors.forename: Tetsuyuki
authors.initials: T
authors.lastname: Ochiai
authors.forename: Takahiro
authors.initials: T
authors.lastname: Tateno
authors.forename: Jongsu
authors.initials: J
authors.lastname: Kim
authors.forename: Takeshi
authors.initials: T
authors.lastname: Noda
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Kawabe
authors.forename: Kazuaki
authors.initials: K
authors.lastname: Sakoda
authors.forename: Giyuu
authors.initials: G
authors.lastname: Kido
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Koguchi
mesh_terms: D001152:Arsenicals / Q000032:analysis / Q000737:chemistry*; D003198:Computer Simulation; D003460:Crystallization / Q000379:methods*; D005708:Gallium / Q000032:analysis / Q000737:chemistry*; D008956:Models, Chemical; D008958:Models, Molecular; D008968:Molecular Conformation; D049329:Nanostructures / Q000032:analysis / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D045663:Quantum Dots; D011789:Quantum Theory; D013329:Structure-Activity Relationship
chemical_list: D001152:Arsenicals; C043055:gallium arsenide; D005708:Gallium