13 papers
Resonant cooling of nuclear spins by optically-oriented holes in MAPbI perovskite crystals
Mladen Kotur, Dmitri R. Yakovlev, Nataliia E. Kopteva +3
Resonant cooling of nuclear spins by photogenerated spin-oriented holes is demonstrated for MAPbI perovskite crystals. It is evidenced by Hanle-effect measurements under helici…
Hyperfine versus exchange interaction in the spin dynamics of spatially indirect excitons in CsPbI perovskite nanocrystals
Timur S. Shamirzaev, Nataliia E. Kopteva, Dmitry S. Smirnov +7
We study the dynamics of recombination, optical orientation, and optical alignment of excitons in ensembles of CsPbI nanocrystals (NCs), synthesized in a glass matrix. In lar…
Layer-dependent Landé -factors of electrons, holes, and excitons in two-dimensional Ruddlesden-Popper lead halide perovskites
Nataliia E. Kopteva, Dmitri R. Yakovlev, Mikhail O. Nestoklon +9
Two-dimensional Ruddlesden-Popper lead halide perovskites provide a valuable platform for tailoring charge and spin properties through quantum confinement and reduced symmetry. Whi…
Hyperfine interaction of electrons and holes with nuclei probed by optical orientation in MAPbI perovskite crystals
Mladen Kotur, Nataliia E. Kopteva, Dmitri R. Yakovlev +3
Optical orientation of electron and hole spins by circularly polarized light is investigated for MAPbI single crystals. The Hanle and polarization recovery effects measured in…
Magnetoluminescence of ZnMnSe/BeMnTe heterostructures with type-II band alignment at millikelvin temperatures
Dennis Kudlacik, Linda Kersting, Nataliia E. Kopteva +3
The magneto-optical properties of a ZnMnSe/BeMnTe diluted magnetic semiconductor heterostructure with type-II band alignment are investigated a…
Exciton spin structure in lead halide perovskite semiconductors explored via the spin dynamics in magnetic field
Vladimir L. Zhiliakov, Nataliia E. Kopteva, Irina A. Yugova +3
We theoretically investigate the spin structure and spin dynamics of excitons in bulk lead halide perovskite semiconductors with cubic, tetragonal, and orthorhombic crystal symmetr…