QUANTUM EFFECTS IN TWO-DIMENSIONAL ELECTRON SYSTEMS
Group members:
team leader - Senior researcher Vladimir V. Andrievskii (Group Leader);
Ph.D Igor B. Berkutov;
researcher Ph.D Ilgar G. Mirzoiev
The main directions of work and recent results:
1. Study of the kinetic properties of the two-dimensional hole gas in Si1-xGex quantum wells with different compositions. The quantum oscillation (Shubnikov-de Haas oscillations) and quantum interferential effects (weak localization, hole-hole and spin-orbit interaction) are being studied [1, 4-5].
2. Investigation of the main transport characteristics of complex low-dimensional systems based on carbon nanotubes (CNTs) and graphite. Researching of the possible effect of the CNT modifications to their transport properties. Quantum corrections to conductivity in the samples were revealed and analyzed [2]. For samples based on modified graphite, the asymmetric magnetoresistance effect was found and explained [3].
3. Studying of the kinetic properties of the two-dimensional electron gas in thin bismuth films at low temperatures (4.2 K) in perpendicular and parallel magnetic fields.
The list of publications (2017 – 2020):
1. Berkutov I.B., Andrievskii V.V., Komnik Yu.F., Mironov O.A., Germanium quantum well with two subbands occupied: kinetic properties // LTP, 43, 10, 1515 (2017).
2. O.I. Prokopov, I.V. Ovsiienko, L.Yu. Matzui, T.A. Len, D.D. Naumova, I.B. Berkutov, I.G. Mirzoiev, and F. Le Normand, Weak localization and interaction effects in acceptor graphite intercalation compounds // LTP, 43, 703 (2017).
3. Ovsiienko I.V., Matzui L.Yu., Berkutov I.B., Mirzoiev I.G., Len T.A., Prylutskyy Yu.I., Prokopov O.I., Ritter U., Magnetoresistance of graphite intercalated with cobalt // "Journal of Materials Science", 53, 1, 716-726 (2018).
4. Berkutov I.B., Andrievskii V.V., Kolesnichenko Y.A., Komnik Yu.F., Mironov O.A., The overheating effects in germanium quantum well with two subbands occupied // LTP, 44, 8, 797 (2018).
5. I. B. Berkutov, V. V. Andrievskii, Yu. A. Kolesnichenko, and O. A. Mironov, Quantum effects in a germanium quantum well with ultrahigh mobility of charge carrier // LTP, 45, 1202 (2019).