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Author |
Cherednichenko, S.; Rönnung, F.; Gol'tsman, G.; Kollberg, E.; Winkler, D. |
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Title |
YBa2Cu3O7−δ hot-electron bolometer mixer |
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Journal Article |
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Year |
2000 |
Publication |
Phys. C: Supercond. |
Abbreviated Journal |
Phys. C: Supercond. |
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Volume  |
341-348 |
Issue |
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Pages |
2653-2654 |
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Keywords |
YBCO HTS HEB mixers |
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Abstract |
We present an investigation of hot-electron bolometric mixer based on YBa2Cu3O7−δ (YBCO) superconducting thin film. Mixer conversion loss, absorbed local oscillator power and intermediate frequency bandwidth was measured at the local oscillator frequency 600 GHz. The fabrication technique for nanoscale YBCO hot-electron bolometer (HEB) mixer integrated into planar antenna structure is described. |
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0921-4534 |
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1552 |
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Sergeev, A.; Karasik, B. S.; Ptitsina, N. G.; Chulkova, G. M.; Il'in, K. S.; Gershenzon, E. M. |
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Title |
Electron–phonon interaction in disordered conductors |
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Journal Article |
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Year |
1999 |
Publication |
Phys. Rev. B Condens. Matter |
Abbreviated Journal |
Phys. Rev. B Condens. Matter |
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Volume |
263-264 |
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Pages |
190-192 |
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Keywords |
disordered conductors, electron-phonon interaction |
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Abstract |
The electron–phonon interaction is strongly modified in conductors with a small value of the electron mean free path (impure metals, thin films). As a result, the temperature dependencies of both the inelastic electron scattering rate and resistivity differ significantly from those for pure bulk materials. Recent complex measurements have shown that modified dependencies are well described at K by the electron interaction with transverse phonons. At helium temperatures, available data are conflicting, and cannot be described by an universal model. |
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0921-4526 |
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1765 |
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Fedorov, G.; Gayduchenko, I.; Titova, N.; Gazaliev, A.; Moskotin, M.; Kaurova, N.; Voronov, B.; Goltsman, G. |
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Title |
Carbon nanotube based schottky diodes as uncooled terahertz radiation detectors |
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Journal Article |
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Year |
2018 |
Publication |
Phys. Status Solidi B |
Abbreviated Journal |
Phys. Status Solidi B |
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Volume |
255 |
Issue |
1 |
Pages |
1700227 (1 to 6) |
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Keywords |
carbon nanotube schottky diodes, CNT |
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Abstract |
Despite the intensive development of the terahertz technologies in the last decade, there is still a shortage of efficient room‐temperature radiation detectors. Carbon nanotubes (CNTs) are considered as a very promising material possessing many of the features peculiar for graphene (suppression of backscattering, high mobility, etc.) combined with a bandgap in the carrier spectrum. In this paper, we investigate the possibility to incorporate individual CNTs into devices that are similar to Schottky diodes. The latter is currently used to detect radiation with a frequency up to 50 GHz. We report results obtained with semiconducting (bandgap of about 0.5 eV) and quasi‐metallic (bandgap of few meV) single‐walled carbon nanotubes (SWNTs). Semiconducting CNTs show better performance up to 300 GHz with responsivity up to 100 V W−1, while quasi‐metallic CNTs are shown to operate up to 2.5 THz. |
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0370-1972 |
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1321 |
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Author |
Karasik, B.S.; Milostnaya, I.I.; Zorin, M.A.; Elantev, A.I.; Gol'tsman, G.N.; Gershenzon, E.M. |
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Title |
Subnanosecond S-N and N-S switching of YBCO film induced by current pulse |
Type |
Journal Article |
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Year |
1994 |
Publication |
Phys. C: Supercond. |
Abbreviated Journal |
Phys. C: Supercond. |
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Volume |
235-240 |
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Pages |
1981-1982 |
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Keywords |
YBCO HTS switches |
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Abstract |
A transition of YBCO bridge 60 nm thick from superconducting to normal state induced by an abrupt current step has been studied. A subnanosecond stage has been observed during both S-N and N-S transition. The data obtained can be explained by hot-electron phenomena. On the basis of experimental results a prediction of picosecond switch performance has been made. |
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0921-4534 |
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Serial |
1633 |
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Author |
Gol'tsman, G. N.; Kouminov, P.; Goghidze, I.; Gershenzon, E. M. |
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Title |
Nonequilibrium kinetic inductive response of YBaCuO thin films to low-power laser pulses |
Type |
Journal Article |
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Year |
1994 |
Publication |
Phys. C: Supercond. |
Abbreviated Journal |
Phys. C: Supercond. |
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Volume |
235-240 |
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Pages |
1979-1980 |
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Keywords |
YBCO HTS KID |
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Abstract |
Transient non-equilibrium kinetic inductive voltage response of YBaCuO thin films to 20 ps pulses of YAG:Nd laser radiation with 0.63 μm and 1.5 μm wavelength has been revealed. By increasing the sensitivity of 100 ps resolution time registration system and diminishing light intensity (fluence 0.1-1 μJ2/cm2) and transport current (density j≤105 A/cm2) we observed a perculiar bipolar signal form with nearly equal amplitudes of each sign. The integration of the kinetic inductive response over time gives the result which is qualitatively of the same form as the response in the resistive and normal states: nonequilibrium picosecond scale component followed by bolometric nanosecond. Nonequilibrium response is interpreted as suppression of order parameter by excess of quasiparticles followed by a change in resistance in the resistive state and kinetic inductance in superconductive state. |
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0921-4534 |
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1634 |
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Prokhodtsov, A.; Golikov, A.; An, P.; Kovalyuk, V.; Goltsman, G.; Arakelyan, S.; Evlyukhin, A.; Kalachev, A.; Naumov, A. |
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Title |
Effect of silicon oxide coating on a silicon nitride focusing grating coupler efficiency |
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Conference Article |
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Year |
2019 |
Publication |
EPJ Web Conf. |
Abbreviated Journal |
EPJ Web Conf. |
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Volume |
220 |
Issue |
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Pages |
02009 |
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Keywords |
grating coupler, SiO2 |
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Abstract |
The dependence of the efficiency of the focusing grating couplers on the period and filling factor before and after deposition of the upper silicon oxide layer was experimentally studied. The obtained data are of practical importance for tunable integrated-optical devices based on silicon nitride platform. |
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2100-014X |
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Serial |
1188 |
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Elmanov, I.; Elmanova, A.; Komrakova, S.; Golikov, A.; Kaurova, N.; Kovalyuk, V.; Goltsman, G.; Arakelyan, S.; Evlyukhin, A.; Kalachev, A.; Naumov, A. |
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Title |
Method for determination of resists parameters for photonic – integrated circuits e-beam lithography on silicon nitride platform |
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Conference Article |
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Year |
2019 |
Publication |
EPJ Web Conf. |
Abbreviated Journal |
EPJ Web Conf. |
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Volume |
220 |
Issue |
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Pages |
03012 |
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Keywords |
e-beam lithography, Si3N4 |
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In the work the thicknesses of the e-beam resists ZEP 520A and ma-N 2400 by using non-destructive method were measured, as well as recipe for the high ratio between the Si3N4 and the resists etching rate was determined. The work has a practical application for e-beam lithography of photonic-integrated circuits and nanophotonics devices based on silicon nitride platform. |
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2100-014X |
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1189 |
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Elmanova, A.; Elmanov, I.; Komrakova, S.; Golikov, A.; Javadzade, J.; Vorobyev, V.; Bolshedvorskii, S.; Soshenko, V.; Akimov, A.; Kovalyuk, V.; Goltsman, G.; Arakelyan, S.; Evlyukhin, A.; Kalachev, A.; Naumov, A. |
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Title |
Integration of nanodiamonds with NV-centers on optical silicon nitride structures |
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Conference Article |
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2019 |
Publication |
EPJ Web Conf. |
Abbreviated Journal |
EPJ Web Conf. |
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Volume |
220 |
Issue |
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Pages |
03013 |
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Keywords |
nanodiamonds, NV-centers, Si3N4 |
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In this work we had developed optical structures from silicon nitride for further integration of the nanodiamonds containing NV-centers with them. We have introduced method of the nanodiamonds solution application on the substrates. The work has practical meaning in nanophotonics sphere and in development of optical devices with single-photon sources. |
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2100-014X |
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1190 |
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Ovchinnikov, O. V.; Perepelitsa, A. S.; Smirnov, M. S.; Latyshev, A. N.; Grevtseva, I. G.; Vasiliev, R. B.; Goltsman, G. N.; Vitukhnovsky, A. G. |
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Title |
Luminescence of colloidal Ag2S/ZnS core/shell quantum dots capped with thioglycolic acid |
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Journal Article |
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Year |
2020 |
Publication |
J. Luminescence |
Abbreviated Journal |
J. Luminescence |
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Volume |
220 |
Issue |
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Pages |
117008 (1 to 7) |
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Keywords |
Ag2S QD, quantum dots |
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The features of IR luminescence of colloidal AgS QDs passivated with thioglycolic acid (AgS/TGA) under the formation of AgS/ZnS/TGA core/shell QDs are considered. A 4.5-fold increase in the quantum yield of recombination IR luminescence within the band with a peak at 960 nm (1.29 eV), full width at half maximum of 250 nm (0.34 eV), and the Stokes shift with respect to the exciton absorption of 0.6 eV was found. The increase in the IR luminescence intensity of AgS/ZnS/TGA QDs is accompanied by an increase in the average luminescence lifetime from 2.9 ns to 14.3 ns, which is explained as “healing” of surface trap states during the formation of the ZnS shell. For the first time, the enhancement of the luminescence intensity photodegradation (hereinafter referred to as fatigue) was found during the formation of the AgS/ZnS/TGA core/shell QDs. The luminescence fatigue is irreversible. We conclude that the initial stage of photolysis of the AgS core QDs under laser irradiation plays a key role. Low-atomic photolytic clusters of silver formed on the AgS core QDs act as luminescence quenching centers and do not reveal structural transformations into AgS, provided that the clusters are not in contact with TGA. |
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0022-2313 |
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1267 |
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Elezov, M.; Scherbatenko, M.; Sych, D.; Goltsman, G.; Arakelyan, S.; Evlyukhin, A.; Kalachev, A.; Naumov, A. |
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Title |
Towards the fiber-optic Kennedy quantum receiver |
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Conference Article |
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Year |
2019 |
Publication |
EPJ Web Conf. |
Abbreviated Journal |
EPJ Web Conf. |
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Volume |
220 |
Issue |
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Pages |
03011 (1 to 2) |
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Keywords |
SSPD, SNSPD, Kennedy quantum receiver |
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Abstract |
We consider practical aspects of using standard fiber-optic elements and superconducting nanowire single-photon detectors for the development of a practical quantum receiver based on the Kennedy scheme. Our receiver allows to discriminate two phase-modulated coherent states of light at a wavelength of 1.5 microns in continuous mode with bit rate 200 Kbit/s and error rate about two times below the standard quantum limit. |
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2100-014X |
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1288 |
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