Author:
Fino Nelson R,Camacho Angela S,Ramírez Hanz Y
Abstract
Abstract
We present a theoretical study of photoluminescence from exciton states in InAs/GaAs asymmetric dot pairs, where interdot coupling is reached via magnetic field in the Faraday configuration. Electronic structure is obtained by finite element calculations, and Coulomb effects are included using a perturbative approach. According to our simulated spectra, bright excited states may become optically accessible at low temperatures in hybridization regimes where intermixing with the ground state is achieved. Our results show effective magnetic control on the energy, polarization and intensity of emitted light, and suggest these coupled nanostructures as relevant candidates for implementation of quantum optoelectronic devices.
Publisher
Springer Science and Business Media LLC
Subject
Condensed Matter Physics,General Materials Science
Reference18 articles.
1. Doty MF, Scheibner M, Bracker AS, Gammon D: Optical spectroscopy of spins in coupled quantum dots. In Nanoscience and Technology. Volume 1. Edited by: Michler P. Berlin: Springer; 2009:330–366.
2. Krenner HJ, Sabathil M, Clark EC, Kress A, Bichler M, Abstreiter G, Finley JJ: Direct observation of controlled coupling in an individual quantum dot molecule. Phys Rev Lett 2005, 94: 057402.
3. Voskoboynikov O: Theory of diamagnetism in asymmetrical vertical quantum dot molecule. Phys Rev B 2008, 78: 113310.
4. Ramirez HY, Camacho AS, Lew Yan Voon LC: DC electric field effects on the electron dynamics in double rectangular quantum dots. Braz J Phys 2006, 36: 869. 10.1590/S0103-97332006000600019
5. Stinaff EA, Scheibner M, Braker AS, Ponomarev IV, Korenev VL, Ware ME, Doty MF, Reinecke TL, Gammon D: Optical signatures of coupled quantum dots. Science 2006, 311: 636. 10.1126/science.1121189
Cited by
7 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献