Single-particle-picture breakdown in laterally weakly confining GaAs quantum dots

Varování

Publikace nespadá pod Ústav výpočetní techniky, ale pod Přírodovědeckou fakultu. Oficiální stránka publikace je na webu muni.cz.

Autoři	HUBER Daniel LEHNER Barbara Ursula CSONTOSOVÁ Diana REINDL Marcus SCHULER Simon COVRE DA SILVA Saimon Filipe KLENOVSKÝ Petr RASTELLI Armando
Rok publikování	2019
Druh	Článek v odborném periodiku
Časopis / Zdroj	Physical Review B
Fakulta / Pracoviště MU	Přírodovědecká fakulta
Citace
www	https://journals.aps.org/prb/abstract/10.1103/PhysRevB.100.235425
Doi	http://dx.doi.org/10.1103/PhysRevB.100.235425
Klíčová slova	quantum dots; magnetic field; configuration interaction
Popis	We present a detailed investigation of different excitonic states weakly confined in single GaAs/AlGaAs quantum dots obtained by the Al droplet-etching method. For our analysis we make use of temperature-, polarization-, and magnetic-field-dependent u-photoluminescence measurements, which allow us to identify different excited states of the quantum dot system. Besides that, we present a comprehensive analysis of g-factors and diamagnetic coefficients of charged and neutral excitonic states in Voigt and Faraday configuration. Supported by theoretical calculations by the configuration-interaction method, we show that the widely used single-particle Zeeman Hamiltonian cannot be used to extract reliable values of the g-factors of the constituent particles from excitonic transition measurements.
Související projekty:	CEITEC 2020 CMOS Compatible Single Photon Sources based on SiGe Quantum Dots