79 citations · 159 across the 7 of their papers we have counts for
7 papers
Spin helices in GaAs quantum wells: Interplay of electron density, spin diffusion, and spin lifetime
S. Anghel, A. V. Poshakinskiy, K. Schiller +4
To establish a correlation between the spin diffusion, the spin lifetime, and the electron density, we study, employing time-resolved magneto-optical Kerr effect microscopy, the sp…
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…
Gate-Control of Anisotropic Spin Transport and Spin Helix Dynamics in a Modulation-Doped GaAs Quantum Well
S. Anghel, F. Passmann, A. Singh +10
Electron spin transport and dynamics are investigated in a single, high-mobility, modulation-doped, GaAs quantum well using ultrafast two-color Kerr-rotation micro-spectroscopy, su…
Enhanced spin lifetimes in a two dimensional electron gas in a gate-controlled GaAs quantum well
Sergiu Anghel, Akshay Singh, Felix Passmann +5
Exciton, trion and electron spin dynamics in a 20 nm wide modulation-doped GaAs single quantum well are investigated using resonant ultrafast two-color Kerr rotation spectroscopy.…
Intervalley scattering of excitons and trions in monolayer WSe under strong excitation
A. A. Mitioglu, L. Klopotowski, D. K. Maude +4
Monolayer transition metal dichalcogenides offer the possibility of optical control of the valley degree of freedom. In order to asses the potential of these materials in applicati…
Identification of 2H and 3R polytypes of MoS2 layered crystals using photoluminescence spectroscopy
S. Anghel, Yu. Chumakov, V. Kravtsov +6
The excitonic radiative recombination of intercalated Cl2 molecules for two different polytypes 2H-MoS2 and 3R-MoS2 layered crystals are presented. The structure of the excitonic e…
Second order resonant Raman scattering in single layer tungsten disulfide (WS)
A. A. Mitioglu, P. Plochocka, G. Deligeorgis +3
Resonant Raman spectra of single layer WS flakes are presented. A second order Raman peak (2LA) appears under resonant excitation with a separation from the E mode…