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Смирнов, Константин Владимирович; Чулкова, Галина Меркурьевна; Вахтомин, Юрий Борисович; Корнеев, Александр Александрович; Окунев, Олег Валерьевич; Дивочий, Александр Валерьевич; Семенов, Александр Владимирович; Гольцман, Григорий Наумович |
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Title |
Особенности разогрева и релаксации горячих электронов О-754 в тонкопленочных cверхпроводниковых наноструктурах и 2D полупроводниковых гетероструктурах при поглощении излучения инфракрасного и терагерцового диапазонов |
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2014 |
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2DEG |
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В монографии рассмотрены основные особенности эффекта электронного разогрева в тонких сверхпроводниковых пленках и полупроводниковых гетеропереходах, возникающего при поглощении носителями заряда излучений терагерцового и инфракрасного диапазонов.
Значительная часть монографии посвящена представлению современных достижений при использовании указанного эффекта для создания приемных устройств с рекордными характеристиками: терагерцовых гетеродинных и болометрических приемников на основе сверхпроводниковых и полупроводниковых структур; сверхпроводниковых приемников одиночных ИК фотонов. В работе также подробно рассмотрены основы современной сверхпроводниковой тонкопленочной технологии.
Монография может быть полезна студентам старших курсов, аспирантам и начинающим исследователям, работающим в области физики твердого тела, оптики, радиофизики. |
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Москва |
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МПГУ |
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Russian |
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978-5-4263-0145-0 |
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240 страниц |
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1814 |
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Чулкова, Г. М.; Корнеев, А. А.; Смирнов, К. В.; Окунев, О. В. |
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Энергетическая релаксация в примесных металлах, двумерном электронном газе в AlGaAs-GaAs, сверхпроводниковых пленках NbN и детекторы субмиллиметрового и ик излучения на их основе |
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2012 |
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2DEG, AlGaAs/GaAs, NbN detectors |
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Монография посвящена обзору исследований влияния эффектов электронного беспорядка на электронное взаимодействие в металлах, сверхпроводниках, полупроводниках, а также в различных низкоразмерных структурах. Актуальность поднятых в монографии вопросов определяется интенсивным развитием нанотехнологий, созданием новых наноструктурированных материалов и уникальных наноэлементов для электроники и фотоники. Упругое электронное рассеяние на границах наноструктур качественно меняет взаимодействие электронов с фонолами, что, безусловно, должно учитываться при проектировании соответствующей элементной базы. Прикладная часть работы посвящена контролируемой модификации электронных процессов для оптимизации новых наносенсоров на основе электронного разогрева в сверхпроводниковых и полупроводниковых структурах. Монография предназначена для студентов старших курсов, аспирантов и начинающих следователей, работающих в области сверхпроводниковой наноэлектроники. |
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Москва |
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Прометей, МПГУ |
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978-5-4263-0118-4 |
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УДК: 537.311 |
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1818 |
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Калмыков, Б.; Фридкин, Г. |
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Сольфеджио. Часть 2. Двухголосие |
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1970 |
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children, music, piano, school, learning |
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Музыка |
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Москва |
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Дурандина, Е. |
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1844 |
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Author |
Czerny, Carl; Germer, Heinrich |
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Selected pianoforte-studies. Edition nr. 300 |
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1900 |
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children, music, piano, learning, school |
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Hansen |
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1845 |
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Gol'tsman, G. N.; Karasik, B. S.; Svechnikov, S. I.; Gershenzon, E. M.; Ekström, H.; Kollberg E. |
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Noise temperature of NbN hot—electron quasioptical superconducting mixer in 200-700 GHz range |
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1995 |
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Proc. 6th Int. Symp. Space Terahertz Technol. |
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Proc. 6th Int. Symp. Space Terahertz Technol. |
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268 |
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NbN HEB mixers, noise temperature |
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The electron heating effect in superconducting films is becoming very attractive for the development of THz range mixers because of the absence of frequency limitations inherent in the bolometric mechanism. However, the evidence for the spectral dependence of the position of optimal operating point has been found recently for NbN thin film devices 1.2 • The effect is presumably attributed to the variation in the absorption of radiation depending on the frequency. Since the resistive state is not spatially uniform the coupling efficiency of the mixer device with radiation can be different for frequencies larger than Zeilh and those smaller than 2Alh (d is the effective superconducting gap in the resistive state). To study the effect more thoroughly we have investigated the noise temperature of quasioptical NbN mixer device with broken hue tapered slot antenna in the frequency range 200-700 GHz. The device consists of several (5-10) parallel strips 1 jim wide and 6-7 tun thick made from NbN film on Si0 2 -Si 3 N 4 -Si membrane. The strips are connected with the gold contacts of the slot-line antenna which serves both as bias and IF leads. We used backward wave oscillators as LO sources and a standard hot/cold load technique for noise temperature measurements. The frequency dependence of noise temperature is mainly determined by two factors: frequency properties of the antenna and frequency dependence of the NbN film impedance. To separate both factors we monitored the frequency dependence of the device responsivity in the detector mode at a higher temperature within the superconducting transition where the impedance of NbN film is close to its normal resistance. In this case the impedance of the device itself is frequency independent. The experimental results will be reported at the Symposium. 1. G. Gollsman, S. Jacobsson, H. EkstrOm, B. Karasik, E. Kollberg, and E. Gershenzon, “Slot-line tapered antenna with NbN hot electron mixer for 300-360 GHz operation,” Proc of the 5th Int. Symp. on Space Terahertz Technology, pp. 209-213a, May 10-12,1994. 2. B.S. Karasik, G.N. Gol i tsman, B.M. Voronov, S.I. Svechnikov, E.M. Gershenzon, H. Ekstrom, S. Jacobsson, E. Kollberg, and K.S. Yngvesson, “Hot electron quasioptical NbN superconducting mixer,” presented at the ASC94, submitted to IEEE Trans. on Appl. Superconductivity. |
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1627 |
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