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Author | Gershenzon, E. M.; Gogidze, I. G.; Goltsman, G. N.; Semenov, A. D.; Sergeev, A. V. | ||||
Title | Picosecond response on optical-range emission in thin YBaCuO films | Type | Journal Article | ||
Year | 1991 | Publication | Pisma v Zhurnal Tekhnicheskoi Fiziki | Abbreviated Journal | Pisma v Zhurnal Tekhnicheskoi Fiziki |
Volume | 17 | Issue | 22 | Pages | 6-10 |
Keywords | YBCO HTS detectors | ||||
Abstract | Целью настоящей работы является целенаправленный поиск пико-секундного отклика на оптическое излучение выяснение оптимальных условий его наблюдения, а также сравнение характеристик неравновесных эффектов в оптическом и субмиллиметровом диапазонах. | ||||
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Language | Russian | Summary Language | Original Title | ||
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Notes | Approved | no | |||
Call Number | Serial | 1684 | |||
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Author | Voevodin, E. I.; Gershenzon, E. M.; Goltsman, G. N.; Ptitsina, N. G. | ||||
Title | Energy-spectrum of shallow acceptors in Ge deformed strongly by a uniaxial pressure | Type | Journal Article | ||
Year | 1989 | Publication | Sov. Phys. and Technics of Semiconductors | Abbreviated Journal | Sov. Phys. and Technics of Semiconductors |
Volume | 23 | Issue | 8 | Pages | 843-846 |
Keywords | Ge, crystallography | ||||
Abstract | Проведены исследования спектров фототермической ионизации мелких акцепторов (В, Аl) в Ge, предельно сжатом вдоль кристаллографической оси [100]. Из данных измерений с учетом теории построен энергетический спектр примесей. Показано, что энергии большого числа уровней четных и нечетных состояний хорошо соответствуют расчету, выполненному для примесей в анизотропном полупроводнике с параметром анизотропии γ=m∗⊥/m∗∥>1. | ||||
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Notes | Энергетический спектр мелких акцепторов в сильно одноосно деформированном Ge | Approved | no | ||
Call Number | Serial | 1692 | |||
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Author | Aksaev, E. E.; Gershenzon, E. M.; Gershenson, M. E.; Goltsman, G. N.; Semenov, A. D.; Sergeev, A. V. | ||||
Title | Prospects for using high-temperature superconductors to create electron bolometers | Type | Journal Article | ||
Year | 1989 | Publication | Pisma v Zhurnal Tekhnicheskoi Fiziki | Abbreviated Journal | Pisma v Zhurnal Tekhnicheskoi Fiziki |
Volume | 15 | Issue | 14 | Pages | 88-93 |
Keywords | HTS HEB | ||||
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Language | Russian | Summary Language | Original Title | ||
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ISSN | 0320-0116 | ISBN | Medium | ||
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Notes | Перспективы применения высокотемпературных сверхпроводников для создания электронных болометров | Approved | no | ||
Call Number | Serial | 1693 | |||
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Author | Gershenzon, E. M.; Gershenson, M. E.; Goltsman, G. N.; Karasik, B. S.; Lyulkin, A. M.; Semenov, A. D. | ||||
Title | Fast-response superconducting electron bolometer | Type | Journal Article | ||
Year | 1989 | Publication | Pisma v Zhurnal Tekhnicheskoi Fiziki | Abbreviated Journal | Pisma v Zhurnal Tekhnicheskoi Fiziki |
Volume | 15 | Issue | 3 | Pages | 88-92 |
Keywords | Nb HEB | ||||
Abstract | The general design, operation, and performance characteristics of fast-response electronic bolometers using a thin superconducting Nb film on a leucosapphire substrate are briefly reviewed. The volt-watt sensitivity of the bolometrs is 2,000-200,000 V/W, the operating temperature is 1.6 K, and the time constant is 4-4.5 ns. | ||||
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Language | Russian | Summary Language | Original Title | ||
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Notes | Approved | no | |||
Call Number | Serial | 1694 | |||
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Author | Gershenzon, E. M.; Gershenson, M. E.; Goltsman, G. N.; Lyulkin, A. M.; Semenov, A. D.; Sergeev, A. V. | ||||
Title | Limiting characteristics of fast-response superconducting bolometers | Type | Journal Article | ||
Year | 1989 | Publication | Zhurnal Tekhnicheskoi Fiziki | Abbreviated Journal | Zhurnal Tekhnicheskoi Fiziki |
Volume | 59 | Issue | 2 | Pages | 11-120 |
Keywords | HEB | ||||
Abstract | Теоретически и экспериментально исследовано физическое ограничение быстродействия сверхпроводящего болометра. Показано, что минимальная постоянная времени реализуется в условиях электронного разогрева и определяется процессом неупругого электрон-фонон-ного взаимодействия. Сформулированы требования к конструкции «электронного болометра» для достижения предельной чувствительности. Проведено сравнение характеристик электронного болометра и обычных болометров различных типов. | ||||
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Notes | Approved | no | |||
Call Number | Serial | 1696 | |||
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Author | Voevodin, E. I.; Gershenzon, E. M.; Goltsman, G. N.; Ptitsina, N. G.; Chulkova, G. M. | ||||
Title | Capture of free holes by charged acceptors in uniaxially deformed Ge | Type | Journal Article | ||
Year | 1988 | Publication | Fizika i Tekhnika Poluprovodnikov | Abbreviated Journal | Fizika i Tekhnika Poluprovodnikov |
Volume | 22 | Issue | 3 | Pages | 540-543 |
Keywords | Ge, free holes, capture | ||||
Abstract | Цель настоящей работы — исследование кинетики примесной фотопроводимости p-Ge при сильном одноосном сжатии в широком диапазоне изменения интенсивности примесного подсвета, создающего свободные дырки, и определение сечения каскадного захвата дырок на мелкие заряженные акцепторы в условиях преобладания электрон-фононного механизма потерь энергии. | ||||
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Language | Russian | Summary Language | Original Title | ||
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Notes | Захват свободных дырок заряженными акцепторами в одноосно деформированном Ge | Approved | no | ||
Call Number | Serial | 1698 | |||
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Author | Gershenzon, Ye. M.; Goltsman, G. N.; Yelantyev, A. I.; Petrova, Ye. B.; Ptitsina, N. G.; Filatov, V. S. | ||||
Title | Lecture demonstrations of properties of superconductors and liquid helium | Type | Journal Article | ||
Year | 1987 | Publication | USSR Rept Phys. Math. JPRS UPM | Abbreviated Journal | USSR Rept Phys. Math. JPRS UPM |
Volume | 24 | Issue | 7 | Pages | 51 |
Keywords | demonstrations, lections | ||||
Abstract | New demonstrations for low temperature physics courses are described. Two transparent Dewar vacuum flasks fitting one inside the other with the external flask for nitrogen and the internal flask for helium are used. The helium temperature can be regulated in the 4.2 to 1.6 K range and the effects of reducing helium to the superfluid state at 2.17 K can be shown: boiling abruptly stops and superfluid flow appears. In order to show the electric and magnetic characteristics of superconductivity, a superconducting NbTi solenoid containing nonsuperconducting wire and germanium and superconducting Nb materials with different critical temperatures is placed in the helium refrigerant vessel. The fall of the resistance at the critical temperatures can be shown. In order to show magnetic field and superconductive current flow properties a shunt of superconductive material is connected in parallel to the coil and is enclosed in a teflon container with a heater which can vary its temperature. When it is heated and not superconductive, magnetic field effects can be demonstrated and when it is unheated and superconducting a continuous current can be demonstrated. | ||||
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Notes | Approved | no | |||
Call Number | Serial | 1704 | |||
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Author | Gershenzon, E. M.; Goltsman, G. N.; Multanovskii, V. V.; Ptitsina, N. G. | ||||
Title | Kinetics of submillimeter impurity and exciton photoconduction in Ge | Type | Journal Article | ||
Year | 1982 | Publication | Optics and Spectroscopy | Abbreviated Journal | Optics and Spectroscopy |
Volume | 52 | Issue | 4 | Pages | 454-455 |
Keywords | Ge, exciton photoconduction | ||||
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Notes | Approved | no | |||
Call Number | Serial | 1715 | |||
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Author | Blagosklonskaya, L. E.; Gershenzon, E. M.; Goltsman, G. N.; Elantev, A. I. | ||||
Title | Effect of strong magnetic-field on spectrum of hydrogen-like admixtures in semiconductors | Type | Conference Article | ||
Year | 1978 | Publication | Izv. Akad. Nauk SSSR, Seriya Fizicheskaya | Abbreviated Journal | Izv. Akad. Nauk SSSR, Seriya Fizicheskaya |
Volume | 42 | Issue | 6 | Pages | 1231-1234 |
Keywords | spectrum, semiconductors, admixtures, strong magnetic-field | ||||
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Publisher | Mezhdunarodnaya Kniga 39 Dimitrova Ul., 113095 Moscow, Russia | Place of Publication | Editor | ||
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Notes | Approved | no | |||
Call Number | blagosklonskaya1978effect | Serial | 1724 | ||
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Author | Gershenzon, E. M.; Goltsman, G. N.; Orlov, L. | ||||
Title | Investigation of population and ionization of donor excited states in Ge | Type | Conference Article | ||
Year | 1976 | Publication | Physics of Semiconductors | Abbreviated Journal | Physics of Semiconductors |
Volume | Issue | Pages | 631-634 | ||
Keywords | Ge, donor excited states | ||||
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Address | Amsterdam | ||||
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Publisher | North-Holland Publishing Co. | Place of Publication | Editor | ||
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Notes | Approved | no | |||
Call Number | Serial | 1732 | |||
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Author | Gershenzon, E. M.; Goltsman, G. N.; Ptitsyna, N. G. | ||||
Title | Investigation of excited donor states in GaAs | Type | Journal Article | ||
Year | 1974 | Publication | Sov. Phys. Semicond. | Abbreviated Journal | Sov. Phys. Semicond. |
Volume | 7 | Issue | 10 | Pages | 1248-1250 |
Keywords | GaAs, excited donor states | ||||
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Publisher | Amer Inst Physics 1305 Walt Whitman Rd, Ste 300, Melville, Ny 11747-4501 Usa | Place of Publication | Editor | ||
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Notes | Approved | no | |||
Call Number | Serial | 1733 | |||
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Author | Averkin, A. S.; Shishkin, A. G.; Chichkov, V. I.; Voronov, B. M.; Goltsman, G. N.; Karpov, A.; Ustinov, A. V. | ||||
Title | Tunable frequency-selective surface based on superconducting split-ring resonators | Type | Conference Article | ||
Year | 2014 | Publication | 8th Metamaterials | Abbreviated Journal | 8th Metamaterials |
Volume | Issue | Pages | |||
Keywords | superconducting split-ring resonators | ||||
Abstract | We study a possibility to use the 2D superconducting metamaterial as a tunable frequency-selective surface (FSS). The proposed FSS is made of sub-wavelength size (l/14) metamaterial unit cells, where a split-ring resonator is embedded in a small iris aperture in a metal plane. The split-ring resonator is made of NbN film, and its resonance frequency is tuned by the temperature of the sample, changing the kinetic inductance of NbN film. The Ansoft HFSS simulation predicts the FSS tuning range of about 10-20 %. The developed superconducting FSS may be used as a tunable band-pass filter or modulator. | ||||
Address | Copenhagen, Denmark | ||||
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Area | Expedition | Conference | 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics – Metamaterials | ||
Notes | Approved | no | |||
Call Number | Serial | 1749 | |||
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Author | Baeva, E. M.; Titova, N. A.; Veyrat, L.; Sacépé, B.; Semenov, A. V.; Goltsman, G. N.; Kardakova, A. I.; Khrapai, V. S. | ||||
Title | Thermal relaxation in metal films limited by diffuson lattice excitations of amorphous substrates | Type | Journal Article | ||
Year | 2021 | Publication | Phys. Rev. Applied | Abbreviated Journal | Phys. Rev. Applied |
Volume | 15 | Issue | 5 | Pages | 054014 |
Keywords | InOx, Au/Ni, NbN films | ||||
Abstract | We examine the role of a silicon-based amorphous insulating substrate in the thermal relaxation in thin NbN, InOx, and Au/Ni films at temperatures above 5 K. The samples studied consist of metal bridges on an amorphous insulating layer lying on or suspended above a crystalline substrate. Noise thermometry is used to measure the electron temperature Te of the films as a function of Joule power per unit area P2D. In all samples, we observe a P2D∝Tne dependence, with exponent n≃2, which is inconsistent with both electron-phonon coupling and Kapitza thermal resistance. In suspended samples, the functional dependence of P2D(Te) on the length of the amorphous insulating layer is consistent with the linear temperature dependence of the thermal conductivity, which is related to lattice excitations (diffusons) for a phonon mean free path shorter than the dominant phonon wavelength. Our findings are important for understanding the operation of devices embedded in amorphous dielectrics. | ||||
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ISSN | 2331-7019 | ISBN | Medium | ||
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Notes | Approved | no | |||
Call Number | Serial | 1769 | |||
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Author | Neroev, V. V.; Iomdina, E. N.; Khandzhyan, A. T.; Khodzhabekyan, N. V.; Sengaeva, M. D.; Ivanova, A. V.; Seliverstov, S. V.; Teplyakova, K. O.; Goltsman, G. N. | ||||
Title | Experimental study of the effect of corneal hydration and its biomechanical properties on the results of photorefractive keratectomy | Type | Journal Article | ||
Year | 2021 | Publication | Vestn. Oftalmol. | Abbreviated Journal | Vestn. Oftalmol. |
Volume | 137 | Issue | 3 | Pages | 68-75 |
Keywords | THz scanning, cornea, photorefractive keratectomy, medicine | ||||
Abstract | Water content in the cornea may affect the outcome of its excimer laser ablation, especially in presbyopic patients with myopic refraction. This hypothesis can be tested by scanning the cornea in the terahertz (THz) range to determine its hydration level. Purpose: To study the effect of hydration of the cornea determined by non-contact THz scanning and its biomechanical parameters on the results of photorefractive keratectomy (PRK) in an experiment. Material and methods: PRK was performed using the Nidek EC-5000 QUEST excimer laser on 8 rabbit eyes. Corneal hydration was evaluated by determining the reflection coefficient (RC) in the THz electromagnetic radiation range before PRK, after 3-5 days, and after 1, 2, 3, and 4 months. Clinical examination included autorefractometry, assessment of corneal thickness and other anatomical and optical parameters of the anterior eye segment (Galilei G6, Ziemer Ophthalmic Systems AG 6.0.2, Switzerland), measurement of corneal hysteresis (CH) and corneal resistance factor (CRF) using the Ocular Response Analyzer (ORA; Reichert, USA), as well as tear production (Schirmer test). Results: The initial water content in the cornea has a significant effect on the thickness of the removed layer, i.e. on the PRK effect, with correlation coefficient of Rs= -0.976 (p<0.01). The correlation between CH and the ablation depth is less pronounced (Rs=0.643), and CRF had no correlation with it (Rs= -0.089). Biomechanical indicators of the cornea depend on its hydration: changes in CH and CRF after excimer laser ablation qualitatively coincide with changes in RC, the correlation coefficient between RC and the initial value of CH is R= -0.619 (moderate negative correlation). Conclusion: THz scanning is an effective non-contact technology for monitoring corneal hydration level. The mismatch of the hypoeffect of keratorefractive excimer laser intervention planned for patients with presbyopia with the actual outcome can be caused by individual decrease in the initial water content in the cornea. |
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Language | Russian | Summary Language | Original Title | ||
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Call Number | Serial | 1794 | |||
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Author | Semenov, A. V.; Devyatov, I. A.; Korneev, A. A.; Smirnov, K. V.; Goltsman, G. N.; Melnikov, A. P. | ||||
Title | Derivation of expression for thermodynamic potential of “dirty” superconductor | Type | Journal Article | ||
Year | 2012 | Publication | Rus. J. Radio Electron. | Abbreviated Journal | Rus. J. Radio Electron. |
Volume | Issue | 4 | Pages | ||
Keywords | dirty superconductor, Usadel theory, thermodynamic potential | ||||
Abstract | We derive a formula for thermodynamic potential of dirty superconductor which express it via isotropic quasiclassical Green functions of Usadel theory. Our result allows unify description of dynamic processes and fluctuations in superconducting nano-electronic devices. | ||||
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Language | Russian | Summary Language | Original Title | ||
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Notes | 7 pages | Approved | no | ||
Call Number | Serial | 1824 | |||
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