85 citations · 258 across the 23 of their papers we have counts for
26 papers
Observation of an emergent energy scale close to dimensional reduction in a quasi-two-dimensional quantum magnet
Anneke Reinold, Laur Peedu, Kirill Amelin +19
By appropriately perturbing a critical transverse-field Ising chain away from its critical point, the system can develop a finite correlation length with a characteristic purely ma…
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…
Spin-dependent Raman and Brillouin light scattering on excitons in CsPbBr perovskite crystals
Ina V. Kalitukha, Victor F. Sapega, Dmitri R. Yakovlev +5
The spin properties of excitons and charge carriers in CsPbBr lead halide perovskite crystals are investigated by spin-dependent light scattering in magnetic fields up to 10 T.…
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…
Optical cooling of nuclear spins in GaAs/(Al,Ga)As quantum wells at subkelvin temperatures: Evidence of the dynamic self-polarization of nuclear spins
M. Kotur, D. Kudlacik, N. E. Kopteva +4
We investigate the dynamic polarization of nuclear spins in a nominally undoped GaAs/AlGaAs quantum well using two complementary experimental approaches: time-res…
Quantum beats of exciton-polarons in CsPbI3 perovskite nanocrystals
A. V. Trifonov, M. O. Nestoklon, M. -A. Hollberg +10
Exciton-phonon interactions govern the energy level spectrum and thus the optical response in semiconductors. In this respect, lead-halide perovskite nanocrystals represent a uniqu…
Antiferromagnetic nonreciprocity of light emission in CuBO
A. R. Nurmukhametov, D. R. Yakovlev, V. Yu. Ivanov +4
Nonreciprocity of light emission, when the radiation intensity differs for two opposite propagation directions, is a rare phenomenon in solids because it requires a violation of th…
Dynamic polarization of nuclear spins by optically-oriented electrons and holes in lead halide perovskite semiconductors
Mladen Kotur, Pavel S. Bazhin, Kirill V. Kavokin +4
A theory of dynamic polarization of the nuclear spin system via optically-oriented charge carriers in lead halide perovskites is developed and compared with the experiments perform…
Magnetic field induced exciton spin dynamics in indirect band gap (In,Al)As/AlAs quantum dots
T. S. Shamirzaev, D. R. Yakovlev, D. S. Smirnov +5
The exciton recombination and spin dynamics are investigated both experimentally and theoretically in an ensemble of indirect band gap (In,Al)As/AlAs quantum dots (QDs) with type-I…
Confined acoustic phonons in CsPbI3 nanocrystals explored by resonant Raman scattering on excitons
Carolin Harkort, Ina V. Kalitukha, Nataliia E. Kopteva +8
Optical properties of the lead halide perovskites nanocrystals are controlled by confined excitons and rich spectrum of confined acoustic and optical phonons. We study experimental…
Landé g-factors and spin dynamics of charge carriers in CuCl nanocrystals in a glass matrix
Dennis Kudlacik, Evgeny A. Zhukov, Dmitri R. Yakovlev +7
The spin properties of charge carriers confined in CuCl semiconductor nanocrystals (NCs) of different sizes (radius from 1.8 nm up to 28 nm) crystallized in a glass matrix are stud…
Optical spin orientation of localized electrons and holes interacting with nuclei in an FACsPbIBr perovskite crystal
Dennis Kudlacik, Nataliia E. Kopteva, Mladen Kotur +8
Optical orientation of carrier spins by circularly polarized light is the basic concept and tool of spin physics in semiconductors. We study the optical orientation of electrons an…
Giant optical orientation of exciton spins in lead halide perovskite crystals
Natalia E. Kopteva, Dmitri R. Yakovlev, Eyüp Yalcin +11
Optical orientation of carrier spins by circularly polarized light is the basis of spin physics in semiconductors. Here, we demonstrate strong optical orientation of 85\%, approach…
Ultrafast dynamics of optically excited charge carriers in the room-temperature antiferromagnetic semiconductor -MnTe
Changqing Zhu, Patrick Pilch, Anneke Reinold +6
We report on time-resolved optical and terahertz ultrafast spectroscopy of charge-carrier dynamics in the room-temperature antiferromagnetic semiconductor -MnTe. By optically pu…
Spin-Flip Raman Scattering on Electrons and Holes in Two-Dimensional (PEA)PbI Perovskites
C. Harkort, D. Kudlacik, N. E. Kopteva +6
The class of Ruddlesden-Popper type (PEA)PbI perovskites comprises two-dimensional (2D) structures whose optical properties are determined by excitons with a large binding…
Weak dispersion of exciton Landé factor with band gap energy in lead halide perovskites: Approximate compensation of the electron and hole dependences
N. E. Kopteva, D. R. Yakovlev, E. Kirstein +11
The photovoltaic and optoelectronic properties of lead halide perovskite semiconductors are controlled by excitons, so that investigation of their fundamental properties is of crit…
Optical orientation of excitons in a longitudinal magnetic field in indirect band gap (In,Al)As/AlAs quantum dots with type-I band alignment
T. S. Shamirzaev, A. V. Shumilin, D. S. Smirnov +5
The exciton recombination and spin dynamics in (In,Al)As/AlAs quantum dots (QDs) with indirect band gap and type-I band alignment are studied. The negligible (less than eV)…
Coherent Spin Dynamics of Electrons in Two-Dimensional (PEA)PbI Perovskites
Erik Kirstein, Evgeny A. Zhukov, Dmitri R. Yakovlev +6
The versatile potential of lead halide perovskites and two-dimensional materials is merged in the Ruddlesen-Popper perovskites having outstanding optical properties. Here, the cohe…
The Landé factors of electrons and holes in lead halide perovskites: universal dependence on the band gap
E. Kirstein, D. R. Yakovlev, M. M. Glazov +16
The Landé or -factors of charge carriers are decisive for the spin-dependent phenomena in solids and provide also information about the underlying electronic band structure. We…
Zeeman and Davydov splitting of Frenkel excitons in the antiferromagnet CuBO
N. E. Kopteva, D. Kudlacik, D. R. Yakovlev +4
The optical spectra of antiferromagnetic copper metaborate CuBO are characterized by an exceptionally rich structure of narrow absorption lines due to electronic transition…
Magneto-optics of excitons interacting with magnetic ions in CdSe/CdMnS colloidal nanoplatelets
E. V. Shornikova, D. R. Yakovlev, D. O. Tolmachev +10
Excitons in diluted magnetic semiconductors represent excellent probes for studying the magnetic properties of these materials. Various magneto-optical effects, which depend sensit…
Single and double electron spin-flip Raman scattering in CdSe colloidal nanoplatelets
Dennis Kudlacik, Victor F. Sapega, Dmitri R. Yakovlev +8
CdSe colloidal nanoplatelets are studied by spin-flip Raman scattering in magnetic fields up to 5 T. We find pronounced Raman lines shifted from the excitation laser energy by an e…
Step-like spectral distribution of photoelectrons at the percolation threshold in heavily -doped GaAs
S. V. Poltavtsev, R. I. Dzhioev, V. L. Korenev +3
We study the origin of the step-like shoulder on the high energy side of the low temperature photoluminescence spectrum of heavily -doped GaAs. We show experimentally that it is…
Voltage control of the long-range p-d exchange coupling in a ferromagnet-semiconductor quantum well hybrid structure
V. L. Korenev, I. V. Kalitukha, I. A. Akimov +14
Voltage control of ferromagnetism on the nanometer scale is highly appealing for the development of novel electronic devices. Here a key challenge is to implement and combine low p…