[19p-C309-1~16] 13.6 Nanostructures, quantum phenomena, and nano quantum devices

△ [19p-C309-8] Control of dimensionality of quantum resonance in CdTe quantum dot superlattices prepared by layer-by-layer assembly

〇Taegi Lee¹, Kazushi Enomoto², Kazuma Ohshiro¹, Daishi Inoue², Tomoka Kikitsu², Hyeon-Deuk Kim³, Yong-Jin Pu², DaeGwi Kim¹ (1.Osaka City Univ., 2.RIKEN CEMS, 3.Kyoto Univ.)

Keywords:quantum dot superlattice, layer-by-layer assembly, miniband

In the quantum dot three-dimensional superlattice fabricated by the layer-by-layer method, it can be expected that coupling of electronic states (i.e. quantum resonance) in both in-plane direction and stacking direction is generated. In this research, we aimed to control the dimensionality of quantum resonance by independently controlling the distance between quantum dots (QDs) in the in-plane and stacking direction respectively. In addition, we experimentally verified the formation of minibands in the quantum dot superlattices (QDSLs) with different dimensionality of electronic states by comparing the detection energy dependency of the photoluminescence excitation (PLE) spectra in the QDSLs and the randomly dispersed QDs.