Zobrazeno 1 - 10
of 388
pro vyhledávání: '"EXCITON SPIN DYNAMICS"'
Akademický článek
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Publikováno v:
Phys. Rev. B 99, 165308 (2019)
We investigate the origin of overshoots in the exciton spin dynamics after resonant optical excitation. As a material system, we focus on diluted magnetic semiconductor quantum wells as they provide a strong spin-flip scattering for the carriers. Our
Externí odkaz:
http://arxiv.org/abs/1902.04921
Publikováno v:
Phys. Rev. B 99, 075301 (2019)
Magnetically doped semiconductors are well known for their giant Zeeman splittings which can reach several meV even in relatively small external magnetic fields. After preparing a nonequilibrium exciton distribution via optical excitation, the spin d
Externí odkaz:
http://arxiv.org/abs/1812.06734
Autor:
Sean A. Bourelle, Franco V. A. Camargo, Soumen Ghosh, Timo Neumann, Tim W. J. van de Goor, Ravichandran Shivanna, Thomas Winkler, Giulio Cerullo, Felix Deschler
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-8 (2022)
Spintronic devices will require long spin lifetimes, but the effect of exciton-lattice coupling on spin lifetime in metal-halide perovskites is not well understood. Here, the authors find a 100-fold increase in the lifetime of exciton spins in a 2D p
Externí odkaz:
https://doaj.org/article/688d4044ea4a4079bb4e93be946bb98e
Akademický článek
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Publikováno v:
J. Appl. Phys. 118, 113103 (2015)
We analyze exciton spin dynamics in GaSe under nonresonant circularly polarized optical pumping with an exciton spin-flip rate-equation model. The model reproduces polarized time-dependent photoluminescence measurements in which the initial circular
Externí odkaz:
http://arxiv.org/abs/1504.07147
The exciton spin dynamics and polarization properties of the related emission are investigated in colloidal CdSe/CdS dot-in-rod (DiR) and spherical core/shell nanocrystal (NC) ensembles by magneto-optical photoluminescence (PL) spectroscopy in magnet
Externí odkaz:
http://arxiv.org/abs/1501.01169
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020)
Strong excitonic effects and spin-orbit coupling in all-inorganic halide perovskite is promising for spintronic application, yet the spin-dependent phenomenon is not well understood. Here, the authors reveal that many-body interactions between spin-p
Externí odkaz:
https://doaj.org/article/726d6f07d8c040aabfb9b657a659511b
Autor:
Liu, Feng, Rodina, A. V., Yakovlev, D. R., Greilich, A., Golovatenko, A. A., Susha, A. S., Rogach, A. L., Kusrayev, Yu. G., Bayer, M.
Publikováno v:
Phys. Rev. B 89, 115306 (2014)
The recombination and spin dynamics of excitons in colloidal CdTe nanocrystals (NCs) are studied by time-resolved photoluminescence in high magnetic fields up to 15 T and at cryogenic temperatures. The recombination decay shows a nonexponential tempo
Externí odkaz:
http://arxiv.org/abs/1312.5929
Publikováno v:
Phys. Rev. B 81, 045301 (2010).
Exciton spin dynamics in quasi-spherical CdS quantum dots is studied in detail experimentally and theoretically. Exciton states are calculated using the 6-band k.p Hamiltonian. It is shown that for various sets of Luttinger parameters, when the wurtz
Externí odkaz:
http://arxiv.org/abs/1001.1318