[qmeso-seminar] семинар сектора 2 ноября

[Mikhail A. Skvortsov]

                     СЕМИНАР СЕКТОРА КВАНТОВОЙ МЕЗОСКОПИКИ

                          пятница 2 ноября, 15:00, ИТФ

                              Э. В. Девятов (ИФТТ)

    Energy spectrum reconstruction at the edge of a two-dimensional electron
                     system with strong spin-orbit coupling

We experimentally demonstrate the simultaneous reconstruction of the
bulk and the edge energy spectra caused by strong spin-orbit interaction,  
at the two lowest filling factors ν=1 and ν=2 for InxGa1−xAs 
two-dimensional electron system with x=0.75. The observed reconstruction 
is of different character at these filling factors: It is characterized 
by zeroing of the energy gap at the levels crossing point at ν=2, 
while the reconstruction at ν=1 goes through the coexistence of
two ν=1 quantum Hall phases with different spin projections. 
An analysis indicates a strong influence of many-body interaction 
on the reconstruction at ν=1.

[A. Kononov, G. Biasiol, L. Sorba, and E. V. Deviatov,
Phys. Rev. B 86, 125304 (2012)]