Kotelnikov Valery Pavlovich Biography

The size of the electronic beam is 2 nm for an accelerating voltage of 20 kV. The minimum size of the structure for resistance with ultra -high HSQ resolution is 20 nm. Superfinker -insulator mixers based on tunnel transitions - SIS superconductor are the best input devices at frequencies from 0. For the implementation of the limiting parameters of SIS -mixers, the creation and optimization of the reproducible and reliable production technology with the thickness of the tunnel barrier with an extremely high current density and small leaking currents.

To coordinate with the wave -water elements of the mixer, the area of ​​the transition with a high current density must be shares of a square micrometer. Electronic lithography is one of the most promising methods for the production of nanostructures for scientific and research purposes, since it allows you to quickly change the design of individual elements and microcircuits as a whole and achieve high reproducibility of results in the submicron region of the size of tunnel crossings.

To create a reproducible and reliable technology for the manufacture of high-quality tunnel structures with good reproduction, with a small scatter of parameters in the substrate, the technology for the manufacture of tunnel structures of submicron dimensions using direct electron beam lithography and subsequent plasmical etching of rice has been developed. The array of NB - ALN - NBN structures after plasmochemical etching on the resistance mask made and investigated using an electron microscope with an electronic lithograph system.

Photo points are used in the technological chain of production of integrated microcircuits and are one of the main elements for photolithography. For the manufacture of a set of photosm machines, electronic lithography is used on the surface of photo -range blanks with a coating with a negative or positive electronic resistance rice. Photo -screen workpiece in the holder for loading into an electron microscope with an electronic lithography system.

A photograph made using an electron microscope with an electronic lithograph system. The main results are the study of the GHz wave sector of the GHz range, the design optimization and the measurement of the main characteristics has been developed, manufactured and tested by a wave -water mixer of the GHz Range based on the tunnel structures of the superconductor - the isolator - the SIS superconductor.

The technology for the manufacture of tunnel structures was optimized for obtaining a CIS mixer of the GHz range on quartz substrates. An additional layer of aluminum 5 nm thick at a distance of 50 nm from the tunnel barrier was introduced into the lower electrode. This layer not only improved the morphology of the Niobium film near the barrier, but also significantly changed the function of the distribution of electrons in the electrode near the barrier, which led to the complete suppression of the knee -like feature.

As a result, the CIS mixers of the GHz range with a noise temperature of less than 20 K were implemented, which is the best result in this range published for this time. Experimental data are shown without any corrections for losses in input optical elements. The measurement error shown by vertical segments is approximately 2 K. Publications: K. Rudakov, A.

Khudchenko, L. Filippenko, M. Paramonov, R. Hesper, D. Lima, A. Baryshev, and V. Koshelets, “Thz Range Low-Noise Sis Receivers for Space and Ground-Based Radio Astronomy, Applied Sciences, 11, Laboratory TGC Spectroscopy using an integral receiver and Josephon Generator, which radiates in the open space. The open space of the THC generator of the range of the distributed tunnel SIS transition, which was from shares to the units of Mikrovatt in the range from to GHz, with a maximum of about 3.

The successful work of the generator in the experiment on laboratory spectroscopy of gas mixtures was demonstrated. As a spectrometer, a superconductive SIS receiver was used, which has a similar generator as a heterodine integrated with a detector on the same chip, and a source developed by the TGC in the open space is used as an active generator. The possibility of registering gas absorption spectra in a cell with spectral resolution was demonstrated better than the KHC.

The experiment is a visual demonstration of the effective application of the developed generator as an active source for the tasks of the TGC spectroscopy, as well as the near -field TSC of microscopy and the construction of images. Publications: N. Kinev, K. Rudakov, L. Filippenko, A. Baryshev and V. In the framework of the RFFIA project, the spectral characteristics of the new types of mes-generators based on the Josephson MDP transitions with various electrodes configurations were studied.

Measurements were carried out in the range - GHz with spectral resolution is better than 0.2 MHz.The experiments were carried out in the temperature range of the generators from 10 to 40 K. The width of the line of the output signal of separately working generators was from 30 to 40 MHz with characteristic current currents of the MA. In the study of radiation from two neighboring Mesa structures made on one substrate, the effect of mutual synchronization of the generators and a decrease in the integral width of the line was found.

Together with colleagues from the University of Tubingen, TGCs have been investigated by the emission properties of such structures associated with resonant mods. Applied, 11, planar antennas matrices with integrated synis for radiostronomic studies have developed, and experimentally studied matrices of the ring half-wave and electrically small planar antennas with blue-bolometers integrated into them.

The effectiveness of the receiving structure was studied depending on the direction of irradiation: through the substrate and from the antenna, as well as depending on the thickness of the substrate. In the experiment, an additional standardization for a support signal measured inside the cryostat was used. The best results were obtained during the lighting of the matrix from the antenna with the thickness of the substrate, the equivalent quarter of the wavelength in the dielectric and with the outline of the back of the gold with a film of the counter -reflector.

The strip of effective coordination amounted to more GHz. According to the measured voltaspertor characteristics, a detailed analysis of thermal flows in the structures of Sinis was carried out at temperatures from 0. It was found that electron-phonon interaction at these temperatures is proportional to not the fifth, but the sixth degree of temperature, which leads to an increase in the accuracy of determining the electronic temperature and the maximum characteristics of the detectors synis.

Publications: Tarasov, M. The use of a negative MA-N resistance with lower sensitivity and better contrast compared to the UVN resistance experimentally measured the spread of the parameters of the tunnel structures of submicron sizes by the substrate, and the reproduction of the production process from the cycle to the cycle. Publications: Fominsky, M.

Flicting sensitivity was 1. Several technology options were developed: the basic - with one liquid etching, improved with additional etching of normal metal, as well as a method using spraying at the corners. Using these technologies, Sinis Bolometers were manufactured and investigated, where gaphnia, copper or palladium were used as normal metal.

The measurements of the Sinis of Bolometers with a suspended absorber of copper, Gafnia, Palladium confirmed the quantum absorption model at the GHz frequency and demonstrated high quantum efficiency, which reaches 15 electrons per quanta of radiation, that is, in such sinis molometers, a marshmanding regime with high quantum efficiency is realized. A schematic image of a marshmaker based on the synis structure and the image of the manufactured structure in the electronic microscope of publication: M.

Tarasov, A. Gunbina, R. Yuspov, A. Chekushkin, D. Nagirnaya, S. Lemzyakov, V. Vdovin, V Edelman, A. Kalaboukhov, D. Two fundamentally different independent methods were used to register harmonics: a broadband study with a low spectral resolution of the order of 1 GHz using a Michelson interferometer, and a high-spectral resolution study is better than the 2nd generation and, in some cases, the 3rd harmonics of the main signal.

The ratio of the width of the spectral line of the second harmonics in relation to the first was about 4, which is well corresponded to the theoretical value of N2 N - the harmonic number for broadband fluctuations. Filippenko, V. To calculate the parameters of the barrier, a separate procedure was created, which automatically performs a parabolic approximation of conductivity and solves the system of nonlinear equations to determine the parameters of the barrier.

The dependences of the height and width of the tunnel barrier on the specific resistance for each type of transitions are experimentally determined. A decrease in the height of the tunnel barrier of the transition with a layer from Aln by 0. Publications: Paramonov, M. It is known that the values ​​of the London penetration depth for these materials are significantly greater than for the 85 Nm niobium.

It is shown that the use of nbtin films leads to a significant shift in the operating frequency of the scheme. Also, a modeling of a structure with a base electrode from Nbtin and aluminum wiring was also performed. To accurately calculate the power of the generator, which will reach the Crosser at frequencies of up to 1 THz, the modified mattis-bardin theory was used, taking into account the presence of intra-based conditions for quasi-players, since the niobium and its compounds NBN and NBTIN are superconductors with a strong connection.

The dependence of the noise temperature of the pixels of the matrix receiver on the heterodine frequency, measured in the 4 GHz bee range. For comparison, data for the central pixel of the previous receiver are given. Publications: Lap B.CHARACTERIZATION OF SUPERCONDUCTING NBTIN FILMS USING A DISPERSive FOURIER TRANSFORM SPectrometer. A cryogenic installation was created for measuring the spectral characteristics of such an amplifier, containing a cold semiconductor amplifier with a circulator and cooled attenuers of the input signal and pumping channels, and superconducted codonary resonator structures were developed and studied to determine the inductive parameters on the microwave elements of DPUV.

Yuspov; L. filippenko; D. BAZULIN; N. Kolotinskiy; M. Tarasov; E. Goldobin; V. P koshelets; V. UNU “Cryointegral” is used as part of the priority direction of the development of science, technology and technology for the research, development and creation of new generations of systems, devices, devices and their components based on technology of nano and microsystem technology, in particular: the development of new integral nanostructures for working in a terager range; development, manufacture and study of the chip of an integral receiver; Technologies for the creation of epitaxial thin oxide films and heterostructures have been developed.

The Union team conducts research in the field of superconducting electronics in close cooperation with many foreign scientific centers. It should be noted that the Union team has a complete set of competencies and technologies for the manufacture of unique superconducting nanostructures. This made it possible to increase the operating frequency of SIS-receivers, expand their strip and create a number of supersensitive receiving devices of the range-GHz, as well as develop the technology of superconductive integrated circuits used to conduct a number of physical experiments.

The superconductive integral receiver of the THC range with a unique set of parameters has been developed. The main element of the receiver is the integrated microcircuit made using UNA. Actual address:, Moscow, st.