141 citations · 325 across the 7 of their papers we have counts for
7 papers
Optical manifestation of the Stoner ferromagnetic transition in 2D electron systems
A. B. Van'kov, B. D. Kaysin, I. V. Kukushkin
We perform a magneto-optical study of a two-dimensional electron systems (2DES) in the regime of the Stoner ferromagnetic instability for even quantum Hall filling factors on Mg$_x…
Long-range nature of surface-enhanced Raman scattering
V. I. Kukushkin, A. B. Van'kov, I. V. Kukushkin
The long-range action of surface-enhanced Raman scattering (SERS) is probed via distance-dependent measurements of molecular Raman spectra. To this end, identical SERS substrates c…
Observation of exchange Coulomb interactions in the quantum Hall state at nu=3
A. B. Van'kov, T. D. Rhone, A. Pinczuk +3
Coulomb exchange interactions of electrons in the nu=3 quantum Hall state are determined from two inter-Landau level spin-flip excitations measured by resonant inelastic light scat…
Cyclotron spin-flip excitations in a ν=1/3 quantum Hall ferromagnet
A. B. Van'kov, L. V. Kulik, S. M. Dickmann +4
Inelastic light scattering spectroscopy around the ν=1/3 filling discloses a novel type of cyclotron spin-flip excitation in a quantum Hall system in addition to the excitations pr…
Long nuclear spin decay times controlled by optical pumping in individual quantum dots
M. N. Makhonin, A. I. Tartakovskii, I. Drouzas +8
Nuclear polarization dynamics are measured in the nuclear spin bi-stability regime in a single optically pumped InGaAs/GaAs quantum dot. The controlling role of nuclear spin diffus…
Nuclear Spin Switch in Semiconductor Quantum Dots
A. I. Tartakovskii, T. Wright, A. Russell +10
We show that by illuminating an InGaAs/GaAs self-assembled quantum dot with circularly polarized light, the nuclei of atoms constituting the dot can be driven into a bistable regim…
The Cyclotron Spin-Flip Mode as the Lowest-Energy Excitation of Unpolarized Integer Quantum Hall States
L. V. Kulik, I. V. Kukushkin, S. Dickmann +6
The cyclotron spin-flip modes of spin unpolarized integer quantum Hall states () have been studied with inelastic light scattering. The energy of these modes is significantl…