78 citations · 250 across the 12 of their papers we have counts for
12 papers
Quantum magnetic oscillations in the absence of closed electron trajectories
Z. E. Krix, O. A. Tkachenko, V. A. Tkachenko +4
Quantum magnetic oscillations in crystals are typically understood in terms of Bohr-Sommerfeld quantisation, the frequency of oscillation is given by the area of a closed electron…
Artificial electrostatic crystals: a new platform for creating correlated quantum states
Daisy Q. Wang, Zeb Krix, Olga A. Tkachenko +7
The electronic properties of solids are determined by the crystal structure and interactions between electrons, giving rise to a variety of collective phenomena including supercond…
Geometric control of universal hydrodynamic flow in a two dimensional electron fluid
Aydın Cem Keser, Daisy Q. Wang, Oleh Klochan +9
Fluid dynamics is one of the cornerstones of modern physics and has recently found applications in the transport of electrons in solids. In most solids electron transport is domina…
Giant terahertz photoconductance of tunneling point contacts
M. Otteneder, Z. D. Kvon, O. A. Tkachenko +5
We report on the observation of the giant photoconductance of a quantum point contact (QPC) in tunneling regime excited by terahertz radiation. Studied QPCs are formed in a GaAs/Al…
Mechanisms for strong anisotropy of in-plane g-factors in hole based quantum point contacts
D. S. Miserev, A. Srinivasan, O. A. Tkachenko +5
In-plane hole g-factors measured in quantum point contacts based on p-type heterostructures strongly depend on the orientation of the magnetic field with respect to the electric cu…
Effects of Coulomb screening and disorder on artificial graphene based on nanopatterned semiconductor
O. A. Tkachenko, V. A. Tkachenko, I. S. Terekhov +1
A residual disorder in the gate system is the main problem on the way to create artificial graphene based on two-dimensional electron gas. The disorder can be significantly screene…
Temperature Dependence of Conductance and Thermopower Anomalies of Quantum Point Contacts
O. A. Tkachenko, V. A. Tkachenko
It has been shown within the Landauer single-channel approach that the presence of the 0.7 anomaly in the conductance of a ballistic microcontact and the respective plateau in the…
Boundary-mediated electron-electron interactions in quantum point contacts
Vincent Thomas Francois Renard, O. A. Tkachenko, V. A. Tkachenko +4
An unusual increase of the conductance with temperature is observed in clean quantum point contacts for conductances larger than 2e^2/h. At the same time a positive magnetoresistan…
Quantum corrections to the conductivity and Hall coefficient of a two-dimensional electron gas in a dirty AlGaAs/GaAs/AlGaAs quantum well: from the diffusive to the ballistic regime
V. T. Renard, I. V. Gornyi, O. A. Tkachenko +5
We report an experimental study of quantum conductivity corrections in a low mobility, high density two-dimensional electron gas in a AlGaAs/GaAs/AlGaAs quantum well in a wide temp…
Can the conductance of an adiabatic ballistic constriction be lower than ?
C. -T. Liang, O. A. Tkachenko, V. A. Tkachenko +4
We have performed four-terminal conductance measurements of a one-dimensional (1D) channel in which it is possible to modulate the potential profile using three overlaying finger g…
Quantum corrections to the conductivity and Hall coefficient of a 2D electron gas in a dirty AlGaAs/GaAs/AlGaAs quantum well: transition from diffusive to ballistic regime
Vincent Thomas Francois Renard, O. A. Tkachenko, Ze Don Kvon +3
We report an experimental study of the quantum corrections to the longitudinal conductivity and the Hall coefficient of a low mobility, high density two-dimensional two-dimensional…
Coulomb Charging Effects in an Open Quantum Dot
O. A. Tkachenko, V. A. Tkachenko, D. G. Baksheyev +6
Low-temperature transport properties of a lateral quantum dot formed by overlaying finger gates in a clean one-dimensional channel are investigated. Continuous and periodic oscilla…