Abstract
Mechanisms of the suppression of the electron-hole exchange interaction in nonradiative excitons with a large in-plane wave vector in high-quality heterostructures with quantum wells are analyzed theoretically. It is shown that the dominant suppression mechanism is exciton-exciton scattering accompanied by the mutual spin flips of like carriers (either two electrons or two holes), comprising the excitons. As a result, the electron spin polarization in nonradiative excitons may be retained for a long time. The analysis of experimental data shows that this relaxation time can exceed one nanosecond. This long-term and optically controllable spin memory in an exciton reservoir may be of interest for future information technologies.
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REFERENCES
A. V. Trifonov, S. N. Korotan, A. S. Kurdyubov, I. Ya. Gerlovin, I. V. Ignatiev, Yu. P. Efimov, S. A. Eliseev, V. V. Petrov, Yu. K. Dolgikh, V. V. Ovsyankin, and A. V. Kavokin, Phys. Rev. B 91, 115307 (2015).
A. V. Trifonov, E. S. Khramtsov, K. V. Kavokin, I. V. Ignatiev, A. V. Kavokin, Y. P. Efimov, S. A. Eliseev, P. Yu. Shapochkin, and M. Bayer, Phys. Rev. Lett. 122, 147401 (2019).
E. L. Ivchenko, Optical Spectroscopy of Semiconductor Nanostructures (Springer, Berlin, 2004).
E. S. Khramtsov, P. A. Belov, P. S. Grigoryev, I. V. Ignatiev, S. Yu. Verbin, Yu. P. Efimov, S. A. Eliseev, V. A. Lovtcius, V. V. Petrov, and S. L. Yakovlev, J. Appl. Phys. 119, 184301 (2016).
P. S. Grigoryev, A. S. Kurdyubov, M. S. Kuznetsova, I. V. Ignatiev, Yu. P. Efimov, S. A. Eliseev, V. V. Petrov, V. A. Lovt’cius, and P. Yu. Shapochkin, Superlatt. Microstruct. 97, 452 (2016).
E. S. Khramtsov, P. S. Grigoryev, D. K. Loginov, I. V. Ignatiev, Yu. P. Efimov, S. A. Eliseev, P. Yu. Shapochkin, E. L. Ivchenko, and M. Bayer, Phys. Rev. B 99, 035431 (2019).
I. A. Yugova, A. Greilich, D. R. Yakovlev, A. A. Kiselev, M. Bayer, V. V. Petrov, Yu. K. Dolgikh, D. Reuter, and A. D. Wieck, Phys. Rev. B 75, 245302 (2007).
M. Dyakonov, X. Marie, T. Amand, P. le Jeune, D. Robart, M. Brousseau, and J. Barrau, Phys. Rev. B 56, 10412 (1997).
R. T. Harley, A. Balocchi, and T. Amand, in Spin Physics in Semiconductors, Ed. by M. I. Dyakonov, 2nd ed. (Springer, 2017), Chap. 2, p. 59.
A. Abragam, The Principle of Nuclear Magnetism (Clarendon, Oxford 1961).
M. I. Dyakonov, in Spin Physics in Semiconductors, Ed. by M. I. Dyakonov, 2nd ed. (Springer, 2017), Chap. 1, p. 21.
I. Ya. Gerlovin, Yu. K. Dolgikh, S. A. Eliseev, V. V. Ovsyankin, Yu. P. Efimov, V. V. Petrov, I. V. Ignatiev, I. E. Kozin, and Y. Masumoto, Phys. Rev. B 65, 035317 (2001).
ACKNOWLEDGMENTS
We thank the Russian Science Foundation for financial support, grant no. 19-72-20039, as well as the Resource Center “Nanophotonics” for the sample studied in the present work.
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Trifonov, A.V., Ignatiev, I.V., Kavokin, K.V. et al. On the Suppression of Electron-Hole Exchange Interaction in a Reservoir of Nonradiative Excitons. Semiconductors 53, 1170–1174 (2019). https://doi.org/10.1134/S1063782619090239
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DOI: https://doi.org/10.1134/S1063782619090239