Wigner Localization and Whispering Gallery Modes of Electrons in Quantum Dots
- 作者: Mintairov A.1,2, Merz J.1, Kapaldo J.1, Vlasov A.2, Blundell S.3
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隶属关系:
- University of Notre Dame
- Ioffe Institute
- Université Grenoble Alpes
- 期: 卷 52, 编号 4 (2018)
- 页面: 502-506
- 栏目: XXV International Symposium “Nanostructures: Physics and Technology”, Saint Petersburg, June 26–30, 2017. Quantum Wells, Quantum Wires, Quantum Dots, and Band Structure
- URL: https://journals.rcsi.science/1063-7826/article/view/202863
- DOI: https://doi.org/10.1134/S1063782618040218
- ID: 202863
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详细
We used a low temperature near-field scanning optical microscopy (NSOM) to study a formation of Wigner molecules (WMs) in the emission spectra of self-organized InP/GaInP QDs having up to seven electrons. We used a Schottky diode structure for the electrostatic control of the number of the electrons (N) in QD, and we observed the emission of the charged excitons (for N < 3) and of the WMs (for N > 2) in the regime of weak Wigner localization. We show, that a contribution of whispering gallery modes (WGMs) of the electrons and rearrangement of the electrons between the WM and WGM states in the QDs, can explain the anomalous dependence of NSOM image size on the quantum confinement observed for some dots.
作者简介
A. Mintairov
University of Notre Dame; Ioffe Institute
编辑信件的主要联系方式.
Email: amintair@nd.edu
美国, Notre Dame, IN, 46556; Saint Petersburg, 194021
J. Merz
University of Notre Dame
Email: amintair@nd.edu
美国, Notre Dame, IN, 46556
J. Kapaldo
University of Notre Dame
Email: amintair@nd.edu
美国, Notre Dame, IN, 46556
A. Vlasov
Ioffe Institute
Email: amintair@nd.edu
俄罗斯联邦, Saint Petersburg, 194021
S. Blundell
Université Grenoble Alpes
Email: amintair@nd.edu
法国, Grenoble, F-38000