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- Russian Academy of SciencesRU76 papers
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69 papers · 1 filter
Bounds on the fine structure constant variability from FeII absorption lines in QSO spectra
Paolo Molaro, Dieter Reimers, Irina I. Agafonova +1
The Single Ion Differential alpha Measurement (SIDAM) method for measuring fine stucture variations (daa)and its figures of merit are illustrated together with the results produced…
Electric field effect on electron spin splitting in SiGe/Si quantum wells
M. O. Nestoklon, E. L. Ivchenko, J. -M. Jancu +1
Effect of electric field on spin splitting in SiGe quantum wells (QWs) has been studied theoretically. Microscopical calculations of valley and spin splittings are performed in the…
UVES radial velocity accuracy from asteroid observations. Implications for the fine structure constant variability
P. Molaro, S. A. Levshakov, S. Monai +4
High resolution observations of the asteroids Iris and Juno have been performed by means of the UVES spectrograph at the ESO VLT to obtain the effective accurac y of the spectrogra…
Symmetry and spin dephasing in (110)-grown quantum wells
V. V. Bel'kov, P. Olbrich, S. A. Tarasenko +7
Symmetry and spin dephasing of in (110)-grown GaAs quantum wells (QWs) are investigated applying magnetic field induced photogalvanic effect (MPGE) and time-resolved Kerr rotation.…
Magnetotransport in low-density -Si/SiGe heterostructures: From metal through hopping insulator to Wigner glass
I. L. Drichko, A. M. Dyakonov, I. Yu. Smirnov +6
We study DC and AC transport in low-density Si/SiGe heterostructures at low temperatures and in a broad domain of magnetic fields up to 18 T. Complex AC conductance is determin…
Magnetoelastic and thermal effects in the BiMn2O5 lattice: a high-resolution x-ray diffraction study
E. Granado, M. S. Eleoterio, A. F. Garcia-Flores +3
High-resolution synchrotron x-ray diffraction measurements were performed on single crystalline and powder samples of BiMn2O5. A linear temperature dependence of the unit cell volu…