62 Result(s)

Article

Low-Frequency Microwave Response of a Quantum Point Contact

The low-frequency microwave photoconductance of a short (100 nm) quantum point contact based on a high-mobility two-dimensional electron gas in the frequency range of 2–3 GHz is investigated for the first time...

V. A. Tkachenko, A. S. Yaroshevich, Z. D. Kvon, O. A. Tkachenko… in JETP Letters (2021)

Article

Photon-Stimulated Transport in a Quantum Point Contact (Brief Review)

Studies of photon-stimulated transport through a quantum point contact based on a high-mobility two-dimensional electron gas in a GaAs quantum well are reviewed. This review includes a brief historical introdu...

V. A. Tkachenko, Z. D. Kvon, O. A. Tkachenko, A. S. Yaroshevich… in JETP Letters (2021)

Article

Simulation of the Quantum Hall Effect in Samples with Weak Long-Range Disorder

The fine structure of the density of states is studied numerically in the quantum Hall effect mode during the ballistic transmission of an electron through an area of 1 µm² of a two-dimensional electron gas with ...

O. A. Tkachenko, V. A. Tkachenko, D. G. Baksheev, O. P. Sushkov in JETP Letters (2020)

Article

Photon-Assisted Electron Transmission through a Quantum Point Contact

The theory of coherent photon-assisted electron transmission through a one-dimensional smooth barrier is successfully used to model the results of measuring the terahertz photoconductivity of a tunneling point...

O. A. Tkachenko, D. G. Baksheev… in Optoelectronics, Instrumentation and Data … (2019)

Article

Simulation of the Dust-Air Flow Near a Rotating Disk Cylinder Suction Unit

We study a dust-air flow near a vertical rotating cylinder with suction unit placed on the lateral surface. On the basis of the developed computer model of this suction unit, we determine the influence of the ...

A. B. Gol’tsov, K. I. Logachev, O. A. Averkova… in Refractories and Industrial Ceramics (2019)

Article

Investigation of the Dust-Air Flow Near a Vertical Rotating Cylindrical Local Exhaust

We seek constructive solutions aimed at the improvement of the efficiency of dust capture for an open-type local exhaust and at decreasing the dust losses into an aspiration network by a closed-type local exha...

A. B. Gol’tsov, K. I. Logachev, O. A. Averkova… in Refractories and Industrial Ceramics (2019)

Article

Numerical Analysis of the Dust-Air Current Near a Spherical Suction Unit Screened by a Circular Swirling Jet. Part 2. Dynamics of Dust Particles¹

We study the method of catching of pollutants with the use of a local suction unit placed over an impermeable plane and in the closed domain of an aspiration hood. The suction unit is screened by a circular sw...

M. S. Gritskevich, K. I. Logachev, O. A. Averkova… in Refractories and Industrial Ceramics (2019)

Article

Numerical Analysis of Dust-Air Flows Near a Round Suction Unit, Screened by an Annular Swirling Jet. Part 1. Air-Jet Flows

We consider a method aimed at screening contaminants with the help of local exhaust ventilation whose important element is a local suction gun. We investigate the influence of the ratio of the geometric sizes ...

M. S. Gritskevich, K. I. Logachev, O. A. Averkova… in Refractories and Industrial Ceramics (2018)

Article

Investigation of the Distribution of Velocities of the Air Flow Swirling by a Rotating Exhaust Cylinder

For the improvement of the efficiency of systems of local exhaust ventilation, it is necessary to localize the emission of pollutants with minimum losses of the electric power. The application of rotating exha...

A. B. Gol’tsov, K. I. Logachev, O. A. Averkova… in Refractories and Industrial Ceramics (2018)

Article

Steps of the Giant Terahertz Photoconductance of a Tunneling Point Contact

The photoresponse of the conductance of a tunneling quantum point contact to irradiation in the frequency range of 0.5–1.7 THz has been simulated within the theory of photon-assisted tunneling. The simulation ...

O. A. Tkachenko, V. A. Tkachenko, D. G. Baksheev, Z. D. Kvon in JETP Letters (2018)

Article

A Model for Calculating the Characteristics of Separation of Transplutonium and Rare Earth Elements by High-Performance Liquid Chromatography

A mathematical model was developed for calculating the characteristics of a process for chromatographic separation of metals as applied to the problem of preparing pure transplutonium elements for their subseq...

S. G. Tret’yakova, V. L. Vidanov, V. A. Tkachenko, O. V. Shmidt… in Radiochemistry (2018)

Article

Scaling of the conductance and resistance of square lattices with an exponentially wide spectrum of the resistances of links

The conductance G̅ and \(\overline {{G^{ - 1}}} \) ...

O. A. Tkachenko, V. A. Tkachenko in JETP Letters (2017)

Article

Concentration Dependence of the Rate of Catalytic Isotopic Exchange of Hydrogen with Water Vapor on the Catalyst RKhTU-3SM

One method of separating hydrogen isotopes is chemical isotopic exchange of hydrogen with liquid water, combined with electrolysis of water. At present, different mathematical models are used to calculate the ...

V. A. Tkachenko, A. V. Ovcharov, M. B. Rozenkevich in Atomic Energy (2017)

Article

Percolation and the electron–electron interaction in an array of antidots

A square lattice of microcontacts with a period of 1 μm in a dense low-mobility two-dimensional electron gas is studied experimentally and numerically. At the variation of the gate voltage V ...

V. A. Tkachenko, O. A. Tkachenko, G. M. Minkov, A. A. Sherstobitov in JETP Letters (2016)

Article

Introscopy in nano- and mesoscopic physics: Single electronics and quantum ballistics

A method is presented to be used in a computational experiment aimed at studying the internal structure of nano- and mesoscopic objects, i.e., conducting subsystems and quantum phenomena in solid submicron obj...

V. A. Tkachenko, O. A. Tkachenko, Z. D. Kvon… in Optoelectronics, Instrumentation and Data … (2016)

Article

Response to the comment on “Photon-assisted electron transport through a quantum point contact in a microwave field” (JETP Lett. 102, 378 (2015))

O. A. Tkachenko, V. A. Tkachenko, Z. D. Kvon in JETP Letters (2016)