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| Author | Korneeva, Yuliya; Florya, Irina; Vdovichev, Sergey; Moshkova, Mariya; Simonov, Nikita; Kaurova, Natalia; Korneev, Alexander; Goltsman, Gregory | ||||
| Title | Comparison of hot-spot formation in NbN and MoN thin superconducting films after photon absorption | Type | Conference Article | ||
| Year | 2017 | Publication | IEEE Transactions on Applied Superconductivity | Abbreviated Journal | IEEE Transactions on Applied Superconductiv |
Volume  |
27 | Issue | 4 | Pages | 5 |
| Keywords | Thin film devices, Superconducitng photoncounting devices, Nanowire single-photon detectors | ||||
| Abstract | In superconducting single-photon detectors SSPD the efficiency of local suppression of superconductivity and hotspot formation is controlled by diffusivity and electron-phonon interaction time. Here we selected a material, 3.6-nm-thick MoNx film, which features diffusivity close to those of NbN traditionally used for SSPD fabrication, but with electron-phonon interaction time an order of magnitude larger. In MoNx detectors we study the dependence of detection efficiency on bias current, photon energy, and strip width and compare it with NbN SSPD. We observe non-linear current-energy dependence in MoNx SSPD and more pronounced plateaus in dependences of detection efficiency on bias current which we attribute to longer electronphonon interaction time. |
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| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | RPLAB @ kovalyuk @ | Serial | 1114 | ||
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| Author | Gershenzon, E. M.; Gol’tsman, G. N.; Semenov, A. D.; Sergeev, A. V. | ||||
| Title | Mechanism of picosecond response of granular YBaCuO films to electromagnetic radiation | Type | Journal Article | ||
| Year | 1991 | Publication | IEEE Trans. Magn. | Abbreviated Journal | IEEE Trans. Magn. |
| Volume |
27 | Issue | 2 | Pages | 1321-1324 |
| Keywords | YBCO HTS detectors | ||||
| Abstract | Ultrafast mechanisms of radiation detection in granular YBaCuO films are studied in the wide wavelength range from millimeter waves to near infrared. With an increase in radiation frequency, the Josephson detection at the grain-boundary weak links is replaced by electron heating into the grains. This change occurs in the submillimeter wavelength range. The electron-phonon relaxation time tau /sub eph/ is determined from direct measurements, quasi-stationary electron heating measurements, and the frequency dependence of the current at which maximum voltage shift is observed. The temperature dependence of tau /sub eph/ at T<or=40 K was found to be tau /sub eph/ approximately T/sup -1/. The results show that detectors with a response time of a few picoseconds at nitrogen temperature are attainable. | ||||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 1941-0069 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Serial | 1679 | |||
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| Author | González, F. J.; Boreman, G. D. | ||||
| Title | Comparison of dipole, bowtie, spiral and log-periodic IR antennas | Type | Journal Article | ||
| Year | 2005 | Publication | Infrared Physics & Technology | Abbreviated Journal | Inf Phys & Technol |
| Volume |
46 | Issue | 5 | Pages | 418-428 |
| Keywords | optical antennas; Microbolometer; Infrared antennas; Antenna efficiency; Antenna-coupled detectors | ||||
| Abstract | Antenna-coupled microbolometers use planar lithographic antennas to couple infrared radiation into a bolometer with sub-micron dimensions. In this paper four different types of infrared antennas were fabricated on thin grounded-substrates and coupled to microbolometers. Dipole, bowtie, spiral and log-periodic IR antenna-coupled detectors were measured at 10.6 μm and their performance compared. A new method to calculate the radiation efficiency based on the spatial and angular response of infrared antennas is presented and used to evaluate their performance. The calculated radiation efficiency for the dipole, bowtie, spiral and log-periodic IR antennas was 20%, 37%, 25% and 46% respectively. A dipole-length study was performed and shows that the quasistatic value of the effective permittivity accurately describes the incident wavelength in the substrate at infrared frequencies for antennas on a thin substrate. | ||||
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| Notes | Approved | no | |||
| Call Number | RPLAB @ gujma @ | Serial | 739 | ||
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| Author | Gershenzon, E. M.; Gol'tsman, G. N.; Karasik, B. S.; Semenov, A. D. | ||||
| Title | Measurement of the energy gap in the compound YBaCu3O9-δ on the basis of the IR absorption spectrum | Type | Journal Article | ||
| Year | 1987 | Publication | JETP Lett. | Abbreviated Journal | JETP Lett. |
| Volume |
46 | Issue | 5 | Pages | 237-238 |
| Keywords | YBCO HTS detectors | ||||
| Abstract | For the first time the long-wave infrared absorption spectrum has been measured by means of the bolometric effect and energy gap for high-temperature superconducting ceramics YBa/sub 2/Cu/sub 3/O/sub 9-delta/ has been determined from absorption threshold. 2delta/kT/sub c/ value is equal to 0.6. | ||||
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| Notes | Approved | no | |||
| Call Number | Serial | 1703 | |||
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| Author | Akhmadishina, K. F.; Bobrinetskiy, I. I.; Komarov, I. A.; Malovichko, A. M.; Nevolin, V. K.; Fedorov, G. E.; Golovin, A. V.; Zalevskiy, A. O.; Aidarkhanov, R. D. | ||||
| Title | Fast-response biological sensors based on single-layer carbon nanotubes modified with specific aptamers | Type | Journal Article | ||
| Year | 2015 | Publication | Semicond. | Abbreviated Journal | Semicond. |
| Volume |
49 | Issue | 13 | Pages | 1749-1753 |
| Keywords | carbon nanotubes, CNT detectors | ||||
| Abstract | The possibility of the fabrication of a fast-response biological sensor based on a composite of single-layer carbon nanotubes and aptamers for the specific detection of proteins is shown. The effect of modification of the surface of the carbon nanotubes on the selectivity and sensitivity of the sensors is investigated. It is shown that carboxylated nanotubes have a better selectivity for detecting thrombin. | ||||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 1063-7826 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Serial | 1783 | |||
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| Author | Fedorov, G. E.; Stepanova, T. S.; Gazaliev, A. S.; Gaiduchenko, I. A.; Kaurova, N. S.; Voronov, B. M.; Goltzman, G. N. | ||||
| Title | Asymmetric devices based on carbon nanotubes for terahertz-range radiation detection | Type | Journal Article | ||
| Year | 2016 | Publication | Semicond. | Abbreviated Journal | Semicond. |
| Volume |
50 | Issue | 12 | Pages | 1600-1603 |
| Keywords | carbon nanotubes, CNT detectors | ||||
| Abstract | Various asymmetric detecting devices based on carbon nanotubes (CNTs) are studied. The asymmetry is understood as inhomogeneous properties along the conducting channel. In the first type of devices, an inhomogeneous morphology of the CNT grid is used. In the second type of devices, metals with highly varying work functions are used as the contact material. The relation between the sensitivity and detector configuration is analyzed. Based on the data obtained, approaches to the development of an efficient detector of terahertz radiation, based on carbon nanotubes are proposed. | ||||
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| ISSN | 1063-7826 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Serial | 1776 | |||
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| Author | Semenov, A. D.; Gol’tsman, G. N.; Gogidze, I. G.; Sergeev, A. V.; Gershenzon, E. M.; Lang, P. T.; Renk, K. F. | ||||
| Title | Subnanosecond photoresponse of a YBaCuO thin film to infrared and visible radiation by quasiparticle induced suppression of superconductivity | Type | Journal Article | ||
| Year | 1992 | Publication | Appl. Phys. Lett. | Abbreviated Journal | Appl. Phys. Lett. |
| Volume |
60 | Issue | 7 | Pages | 903-905 |
| Keywords | YBCO HTS detectors | ||||
| Abstract | We observed subnanosecond photoresponse of a structured superconducting YBa2Cu3O7−δ thin film to infrared and visible radiation. We measured the voltage response of a current biased film (thickness 700 Å) in a resistive state to radiation pulses. From our results we conclude a response time of about 90 ps and a responsivity of about 4×1010 Ω/J. We attribute the response to Cooper pair breaking and suppression of the superconducting energy gap induced by nonequilibrium quasiparticles. | ||||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0003-6951 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Serial | 1672 | |||
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| Author | Semenov, A. D.; Goghidze, I. G.; Gol’tsman, G. N.; Sergeev, A. V.; Gershenzon, E. M. | ||||
| Title | Evidence for the spectral dependence of nonequilibrium picosecond photoresponse of YBaCuO thin films | Type | Journal Article | ||
| Year | 1993 | Publication | Appl. Phys. Lett. | Abbreviated Journal | Appl. Phys. Lett. |
| Volume |
63 | Issue | 5 | Pages | 681-683 |
| Keywords | YBCO HTS detectors, nonequilibrium | ||||
| Abstract | The transient voltage photoresponse of current biased YBaCuO thin films to 20 ps laser pulses of 0.63 and 1.54 μm wavelengths is measured for temperatures around the superconducting transition region. The fast picosecond decay of the response is followed by a slow nanosecond relaxation which is associated with the bolometric effect. The magnitude of the fast component of the response varies in proportion to the square root of wavelength that plausibly reflects multiplication processes of photoexcited electrons via electron–electron scattering and interaction with high energy phonons. | ||||
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| ISSN | 0003-6951 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Serial | 1655 | |||
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| Author | Nebosis, R. S.; Steinke, R.; Lang, P. T.; Schatz, W.; Heusinger, M. A.; Renk, K. F.; Gol’tsman, G. N.; Karasik, B. S.; Semenov, A. D.; Gershenzon, E. M. | ||||
| Title | Picosecond YBa2Cu3O7−δdetector for far‐infrared radiation | Type | Journal Article | ||
| Year | 1992 | Publication | J. Appl. Phys. | Abbreviated Journal | J. Appl. Phys. |
| Volume |
72 | Issue | 11 | Pages | 5496-5499 |
| Keywords | YBCO HTS detectors | ||||
| Abstract | We report on a picosecond YBa2Cu3O7−δ detector for far‐infrared radiation. The detector, consisting of a current carrying structure cooled to liquid‐nitrogen temperature, was studied by use of ultrashort laser pulses from an optically pumped far‐infrared laser in the frequency range from 25 to 215 cm−1. We found that the sensitivity (1 mV/W) was almost constant in this frequency range. We estimated a noise equivalent power of less than 5×10−7 W Hz−1/2. Taking into account the results of a mixing experiment (in the frequency range from 4 to 30 cm−1) we suggest that the response time of the detector was few picoseconds. | ||||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0021-8979 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Serial | 1668 | |||
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| Author | Шангина, Е. Л.; Смирнов, К. В.; Морозов, Д. В.; Ковалюк, В. В.; Гольцман, Г. Н.; Веревкин, А. А.; Торопов, А. И. | ||||
| Title | Концентрационная зависимость полосы преобразования смесителей субмиллиметрового диапазона на основе наноструктур AlGaAs/GaAs | Type | Journal Article | ||
| Year | 2010 | Publication | Изв. РАН Сер. Физ. | Abbreviated Journal | Изв. РАН Сер. Физ. |
| Volume |
74 | Issue | 1 | Pages | 110-112 |
| Keywords | 2DEG AlGaAs/GaAs heterostructures, THz heterodyne detectors, IF bandwidth | ||||
| Abstract | Методом субмиллиметровой спектроскопии с высоким временным разрешением при Т = 4.2 К измерена концентрационная зависимость полосы преобразования гетеродинного детектирования гетероструктур AlGaAs/GaAs с двумерным электронным газом. С увеличением концентрации двумерных электронов ns = (1.6–6.6) · 1011см-2 ширина полосы преобразования f3dB уменьшается от 245 до 145 МГц. В исследованной области концентраций наблюдается зависимость f3dB , обусловленная рассеянием электронов на деформационном потенциале акустических фононов и пьезоэлектрическим рассеянием. | ||||
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| Language | Russian | Summary Language | Original Title | ||
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| Notes | Duplicated as 1217 | Approved | no | ||
| Call Number | RPLAB @ gujma @ | Serial | 642 | ||
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| Author | Shangina, E. L.; Smirnov, K. V.; Morozov, D. V.; Kovalyuk, V. V.; Gol’tsman, G. N.; Verevkin, A. A.; Toropov, A. I. | ||||
| Title | Concentration dependence of the intermediate frequency bandwidth of submillimeter heterodyne AlGaAs/GaAs nanostructures | Type | Journal Article | ||
| Year | 2010 | Publication | Bull. Russ. Acad. Sci. Phys. | Abbreviated Journal | Bull. Russ. Acad. Sci. Phys. |
| Volume |
74 | Issue | 1 | Pages | 100-102 |
| Keywords | 2DEG AlGaAs/GaAs heterostructures, THz heterodyne detectors, IF bandwidth | ||||
| Abstract | The concentration dependence of the intermediate frequency bandwidth of heterodyne AlGaAs/GaAs detectors with 2D electron gas is measured using submillimeter spectroscopy with high time resolution at T= 4.2 K. The intermediate frequency bandwidth f3dBfalls from 245 to 145 MHz with increasing concentration of 2D electrons n s = (1.6-6.6) × 10[su11] cm-2. The dependence f3dB ≈ n s – 0.04±is observed in the studied concentration range; this dependence is determined by electron scattering by the deformation potential of acoustic phonons and piezoelectric scattering. | ||||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 1062-8738 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Serial | 1217 | |||
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| Author | Il'in, K. S.; Lindgren, M.; Currie, M. A.; Semenov, D.; Gol'tsman, G. N.; Sobolewski, Roman; Cherednichenko, S. I.; Gershenzon, E. M. | ||||
| Title | Picosecond hot-electron energy relaxation in NbN superconducting photodetectors | Type | Journal Article | ||
| Year | 2000 | Publication | Appl. Phys. Lett. | Abbreviated Journal | Appl. Phys. Lett. |
| Volume |
76 | Issue | 19 | Pages | 2752-2754 |
| Keywords | NbN HEB detectors, two-temperature model, IF bandwidth | ||||
| Abstract | We report time-resolved characterization of superconducting NbN hot-electron photodetectors using an electro-optic sampling method. Our samples were patterned into micron-size microbridges from 3.5-nm-thick NbN films deposited on sapphire substrates. The devices were illuminated with 100 fs optical pulses, and the photoresponse was measured in the ambient temperature range between 2.15 and 10.6 K (superconducting temperature transition TC). The experimental data agreed very well with the nonequilibrium hot-electron, two-temperature model. The quasiparticle thermalization time was ambient temperature independent and was measured to be 6.5 ps. The inelastic electron–phonon scattering time Ï„e–ph tended to decrease with the temperature increase, although its change remained within the experimental error, while the phonon escape time Ï„es decreased almost by a factor of two when the sample was put in direct contact with superfluid helium. Specifically, Ï„e–ph and Ï„es, fitted by the two-temperature model, were equal to 11.6 and 21 ps at 2.15 K, and 10(±2) and 38 ps at 10.5 K, respectively. The obtained value of Ï„e–ph shows that the maximum intermediate frequency bandwidth of NbN hot-electron phonon-cooled mixers operating at TC can reach 16(+4/–3) GHz if one eliminates the bolometric phonon-heating effect. | ||||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0003-6951 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Serial | 856 | |||
| Permanent link to this record | |||||
| Author | Gershenzon, E. M.; Gol'tsman, G. N.; Semenov, A. D.; Sergeev, A. V. | ||||
| Title | Mechanism of picosecond response of granular YBaCuO films to electromagnetic radiation | Type | Journal Article | ||
| Year | 1990 | Publication | Solid State Communications | Abbreviated Journal | Solid State Communications |
| Volume |
76 | Issue | 4 | Pages | 493-497 |
| Keywords | YBCO HTS detectors | ||||
| Abstract | The ultrafast mechanisms of radiation detection in granular YBaCuO films are studied in the wide wavelength range from millimeter to near infrared. With the rise of radiation frequency the Josephson detection at the grain boundary weak links is replaced by electron heating into the grains. This change occurs in the submillimeter wavelength range. Electron-phonon relaxation time τeph is determined by direct measurements and analyses quasistationary electron heating. Temperature dependence of τeph at T ≤ 40 K was found to be τeph ∼ T−1. The results show that detectors with the response time of few picoseconds at nitrogen temperature are attainable. | ||||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0038-1098 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Serial | 1685 | |||
| Permanent link to this record | |||||
| Author | Dube, I.; Jiménez, D.; Fedorov, G.; Boyd, A.; Gayduchenko, I.; Paranjape, M.; Barbara, P. | ||||
| Title | Understanding the electrical response and sensing mechanism of carbon-nanotube-based gas sensors | Type | Journal Article | ||
| Year | 2015 | Publication | Carbon | Abbreviated Journal | Carbon |
| Volume |
87 | Issue | Pages | 330-337 | |
| Keywords | carbon nanotubes, CNT detectors, field effect transistors, FET | ||||
| Abstract | Gas sensors based on carbon nanotube field effect transistors (CNFETs) have outstanding sensitivity compared to existing technologies. However, the lack of understanding of the sensing mechanism has greatly hindered progress on calibration standards and customization of these nano-sensors. Calibration requires identifying fundamental transistor parameters and establishing how they vary in the presence of a gas. This work focuses on modeling the electrical response of CNTFETs in the presence of oxidizing (NO2) and reducing (NH3) gases and determining how the transistor characteristics are affected by gas-induced changes of contact properties, such as the Schottky barrier height and width, and by the doping level of the nanotube. From the theoretical fits of the experimental transfer characteristics at different concentrations of NO2 and NH3, we find that the CNTFET response can be modeled by introducing changes in the Schottky barrier height. These changes are directly related to the changes in the metal work function of the electrodes that we determine experimentally, independently, with a Kelvin probe. Our analysis yields a direct correlation between the ON – current and the changes in the electrode metal work function. Doping due to molecules adsorbed at the carbon-nanotube/metal interface also affects the transfer characteristics. | ||||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0008-6223 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Serial | 1778 | |||
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| Author | Gol’tsman, G. N.; Semenov, A. D.; Sergeev, A. V.; Aksaev, E. E.; Gogidze, I. G.; Gershenzon, E. M. | ||||
| Title | Electron-phonon interaction in thin YBaCuO films and fast detectors | Type | Conference Article | ||
| Year | 1993 | Publication | Phonon Scattering in Condensed Matter VII. Springer Series in Solid-State Sciences | Abbreviated Journal | Phonon Scattering in Condensed Matter VII. Springer Series in Solid-State Sciences |
| Volume |
112 | Issue | Pages | 184-185 | |
| Keywords | YBCO HTS detectors | ||||
| Abstract | The thin. YBaCuO film response to laser and submillimeter radiation demonstrates the picosecond nonequilibrium peak on the nanosecond bolometric background. Experimental data give an evidence for the spectral dependence of picosecond photoresponse probably due to a poor efficiency of electron multiplication processes. Presented results prove an availability of fast YBaCuO thin film detector. | ||||
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| Publisher | Place of Publication | Editor | Meissner, M.; Pohl, R. O. | ||
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| Area | Expedition | Conference | Seventh International Conference, Cornell University, Ithaca, New York, August 3-7, 1992 | ||
| Notes | Approved | no | |||
| Call Number | Serial | 1662 | |||
| Permanent link to this record | |||||