69 citations · 290 across the 17 of their papers we have counts for
17 papers
Microscopic dynamics of electron hopping in a semiconductor quantum well probed by spin-dependent photon echoes
A. N. Kosarev, S. V. Poltavtsev, L. E. Golub +10
Spin-dependent photon echoes in combination with pump-probe Kerr rotation are used to study the microscopic electron spin transport in a CdTe/(Cd,Mg)Te quantum well in the hopping…
Persistent Spin Helix Manipulation by Optical Doping of a CdTe Quantum Well
F. Passmann, S. Anghel, T. Tischler +6
Time-resolved Kerr-rotation microscopy explores the influence of optical doping on the persistent spin helix in a [001]-grown CdTe quantum well at cryogenic temperatures. Electron…
Magnetic quantum ratchet effect in (Cd,Mn)Te- and CdTe-based quantum well structures with a lateral asymmetric superlattice
P. Faltermeier, G. V. Budkin, J. Unverzagt +13
We report on the observation of magnetic quantum ratchet effect in (Cd,Mn)Te- and CdTe-based quantum well structures with an asymmetric lateral dual grating gate superlattice subje…
High resolution two-dimensional optical spectroscopy of electron spins
M. Salewski, S. V. Poltavtsev, I. A. Yugova +7
Multidimensional coherent optical spectroscopy is one of the most powerful tools for investigating complex quantum mechanical systems. While it was conceived decades ago in magneti…
Photoluminescence spectra of an n-doped (Cd,Mn)Te quantum well: an exemplary evidence for the anisotropy-induced valence-band mixing
A. V. Koudinov, C. Kehl, G. Astakhov +3
Photoluminescence spectra of a (001)-Cd0.99Mn0.01Te quantum well were taken with linear-polarization resolution and using an in-plane magnetic field. Because the quantum well conta…
Engineering the hole confinement for CdTe-based quantum dot molecules
Ł. Kłopotowski, P. Wojnar, S. Kret +4
We demonstrate an efficient method to engineer the quantum confinement in a system of two quantum dots grown in a vertical stack. We achieve this by using materials with a differen…
Optical signatures of spin dependent coupling in semimagnetic quantum dot molecules
Ł. Kłopotowski, P. Wojnar, Ł. Cywiński +5
We present photoluminescence studies of CdTe and CdMnTe quantum dots grown in two adjacent layers. We show that when the dots are 8 nm apart, their magnetooptical properties - Zeem…
Influence of exciton spin relaxation on the photoluminescence spectra of semimagnetic quantum dots
Ł. Kłopotowski, Ł. Cywiński, M. Szymura +8
We present a comprehensive experimental and theoretical studies of photoluminescence of single CdMnTe quantum dots with Mn content x ranging from 0.01 to 0.2. We distinguish three…
Spin-flip Raman scattering of the neutral and charged excitons confined in a CdTe/(Cd,Mg)Te quantum well
J. Debus, D. Dunker, V. F. Sapega +5
Spin-flip Raman scattering of electrons and heavy-holes is studied for resonant excitation of neutral and charged excitons in a CdTe/CdMgTe quantum well. The spin…
Spin-polarized electric currents in diluted magnetic semiconductor heterostructures induced by terahertz and microwave radiation
P. Olbrich, C. Zoth, P. Lutz +11
We report on the study of spin-polarized electric currents in diluted magnetic semiconductor (DMS) quantum wells subjected to an in-plane external magnetic field and illuminated by…
Evidence for Charging Effects in CdTe/CdMgTe Quantum Point Contacts
M. Czapkiewicz, V. Kolkovsky, P. Nowicki +4
Here we report on fabrication and low temperature magnetotransport measurements of quantum point contacts patterned from a novel two-dimensional electron system - CdTe/CdMgTe modul…
Spin polarized electric currents in semiconductor heterostructures induced by microwave radiation
C. Drexler, V. V. Bel'kov, B. Ashkinadze +10
We report on microwave (mw) radiation induced electric currents in (Cd,Mn)Te/(Cd,Mg)Te and InAs/(In,Ga)As quantum wells subjected to an external in-plane magnetic field. The curren…
Enhancement of the spin-gap in fully occupied two-dimensional Landau levels
J. Kunc, K. Kowalik, F. J. Teran +7
Polarization-resolved magneto-luminescence, together with simultaneous magneto-transport measurements, have been performed on a two-dimensional electron gas (2DEG) confined in CdTe…
Spin currents in diluted magnetic semiconductors (extended version)
S. D. Ganichev, S. A. Tarasenko, V. V. Bel'kov +8
Spin currents resulting in the zero-bias spin separation have been observed in unbiased diluted magnetic semiconductor structures (Cd,Mn)Te/(Cd,Mg)Te. The pure spin current generat…
Linear polarization of the photoluminescence of quantum wells
A. V. Koudinov, N. S. Averkiev, Yu. G. Kusrayev +7
The degree and orientation of the magnetic-field induced linear polarization of the photoluminescence from a wide range of heterostructures containing (Cd,Mn)Te quantum wells betwe…
Effects of Spin Polarization on Electron Transport in Modulation Doped Cd(1-x)Mn(x)Te/Cd(1-y)Mg(y)Te:I Heterostructures
T. Andrearczyk, J. Jaroszynski, G. Karczewski +6
We examine and identify magnetoresistance mechanisms in 2D system containing a sizable concentration of magnetic ions. We argue that some of these mechanisms can serve as a tool to…
Inhomogeneous Broadening of Exciton Lines in Magneto-Optical Reflection from CdTe/CdMgTe Quantum Wells
G. V. Astakhov, V. A. Kosobukin, V. P. Kochereshko +6
An approach is proposed to determine parameters of homogeneous and inhomogeneous broadening for reflection lines of quasi-two-dimensional excitons in semiconductor quantum well str…