Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Dzhioev, R."'
Publikováno v:
Phys. Rev. B 102, 014204 (2020)
We study the origin of the step-like shoulder on the high energy side of the low temperature photoluminescence spectrum of heavily $p$-doped GaAs. We show experimentally that it is controlled by the Fermi-Dirac distribution of the holes and by the en
Externí odkaz:
http://arxiv.org/abs/1908.05487
Autor:
Kotur, M., Dzhioev, R. I., Vladimirova, M., Cherbunin, R. V., Sokolov, P. S., Yakovlev, D. R., Bayer, M., Suter, D., Kavokin, K. V.
Publikováno v:
Phys. Rev. B 97, 165206 (2018)
Spin-lattice relaxation of the nuclear spin system in p-type GaAs is studied using a three-stage experimental protocol including optical pumping and measuring the difference of the nuclear spin polarization before and after a dark interval of variabl
Externí odkaz:
http://arxiv.org/abs/1802.05013
Autor:
Nestoklon, M. O., Goupalov, S. V., Dzhioev, R. I., Ken, O. S., Korenev, V. L., Kusrayev, Yu. G., Sapega, V. F., de Weerd, C., Gomez, L., Gregorkiewicz, T., Lin, Junhao, Suenaga, Kazutomo, Fujiwara, Yasufumi, Matyushkin, L. B., Yassievich, I. N.
Publikováno v:
Phys. Rev. B 97, 235304 (2018)
We demonstrate the optical orientation and alignment of excitons in a two-dimensional layer of CsPbI$_3$ perovskite nanocrystals prepared by colloidal synthesis and measure the anisotropic exchange splitting of exciton levels in the nanocrystals. Fro
Externí odkaz:
http://arxiv.org/abs/1802.00726
Autor:
Mocek, R. W., Korenev, V. L., Bayer, M., Kotur, M., Dzhioev, R. I., Tolmachev, D. O., Cascio, G., Kavokin, K. V., Suter, D.
Publikováno v:
Phys. Rev. B 96, 201303 (2017)
The dynamic polarization of nuclear spins by photoexcited electrons is studied in a high quality GaAs/AlGaAs quantum well. We find a surprisingly high efficiency of the spin transfer from the electrons to the nuclei as reflected by a maximum nuclear
Externí odkaz:
http://arxiv.org/abs/1708.00053
Autor:
Vladimirova, M., Cronenberger, S., Scalbert, D., Kotur, M., Dzhioev, R. I., Ryzhov, I. I., Kozlov, G. G., Zapasskii, V. S., Lemaître, A., Kavokin, K. V.
Publikováno v:
Phys. Rev. B 95, 125312 (2017)
Nuclear spin relaxation is studied in n-GaAs thick layers and microcavity samples with different electron densities. We reveal that both in metallic samples where electrons are free and mobile, and in insulating samples, where electrons are localized
Externí odkaz:
http://arxiv.org/abs/1612.01699
Publikováno v:
Phys. Rev. B 94, 081201 (2016)
We show that the spin-lattice relaxation in n-type insulating GaAs is dramatically accelerated at low magnetic fields. The origin of this effect, that cannot be explained in terms of well-known diffusion-limited hyperfine relaxation, is found in the
Externí odkaz:
http://arxiv.org/abs/1606.00143
Publikováno v:
Phys. Rev. B 93, 165301 (2016)
The optical spin orientation effect in a GaAs/(Ga,Al)As quantum well containing a high-mobility 2D electron gas was found to be due to spin-polarized minority carriers, the holes. The observed oscillations of both the intensity and polarization of th
Externí odkaz:
http://arxiv.org/abs/1512.06057
Autor:
Korenev, V. L., Salewski, M., Akimov, I. A., Sapega, V. F., Langer, L., Kalitukha, I. V., Debus, J., Dzhioev, R. I., Yakovlev, D. R., Mueller, D., Schroeder, C., Hoevel, H., Karczewski, G., Wiater, M., Wojtowicz, T., Kusrayev, Yu. G., Bayer, M.
Hybrid structures synthesized from different materials have attracted considerable attention because they may allow not only combination of the functionalities of the individual constituents but also mutual control of their properties. To obtain such
Externí odkaz:
http://arxiv.org/abs/1503.05569
Autor:
Akimov, I. A., Dzhioev, R. I., Korenev, V. L., Kusrayev, Yu. G., Sapega, V. F., Yakovlev, D. R., Bayer, M.
We report on optical orientation of Mn^2+ in bulk GaAs under application of weak longitudinal magnetic field (B <= 100 mT). The manganese spin polarization of 25% is directly evaluated using spin flip Raman scattering spectroscopy. The dynamical pola
Externí odkaz:
http://arxiv.org/abs/1010.1463
Autor:
Akimov, I. A., Dzhioev, R. I., Korenev, V. L., Kusrayev, Yu. G., Zhukov, E. A., Yakovlev, D. R., Bayer, M.
We study the electron spin dynamics in p-type GaAs doped with magnetic Mn acceptors by means of time-resolved pump-probe and photoluminescence techniques. Measurements in transverse magnetic fields show a long spin relaxation time of 20 ns that can b
Externí odkaz:
http://arxiv.org/abs/0907.2851