Magnetic field control of the neutral and charged exciton fine structure in single quantum dashes emitting at 1.55 μ m
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We investigated the neutral and charged exciton fine structure in single InAs/InGaAlAs/InP quantum dashes emitting at 1.55 μm using polarization-resolved microphotoluminescence in a magnetic field. Inverted spin configuration of horizontally [1-10] and vertically  polarized transitions has been observed. An in-plane magnetic field of up to 5 Tesla has been applied to tailor the fine structure, and eventually to reduce the splitting of the bright exciton states down to zero. This inverted structure has been observed for all the investigated excitons, making it a characteristic feature for this class of nanostructures with the largest splitting reduction of 170 μeV.
Mrowiński , P , Musiał , A , Maryński , A , Syperek , M , Misiewicz , J , Somers , A , Reithmaier , J P , Höfling , S & Sęk , G 2015 , ' Magnetic field control of the neutral and charged exciton fine structure in single quantum dashes emitting at 1.55 μ m ' Applied Physics Letters , vol 106 , no. 5 , 053114 . DOI: 10.1063/1.4907650
Applied Physics Letters
© 2015 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Mrowiński, P., Musiał, A., Maryński, A., Syperek, M., Misiewicz, J., Somers, A., Reithmaier, J. P., Höfling, S., & Sęk, G. (2015). Magnetic field control of the neutral and charged exciton fine structure in single quantum dashes emitting at 1.55 μ m. Applied Physics Letters, 106(5), , and may be found at http://scitation.aip.org/content/aip/journal/apl/106/5/10.1063/1.4907650
This research was supported by the Polish Ministry of Science and Higher Education/the National Science Center Grant No. 2011/02/A/ST3/00152. S.H. gratefully acknowledges support by the Royal Society and the Wolfson Foundation.
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