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Author Blagosklonskaya, L. E.; Gershenzon, E. M.; Gol'tsman, G. N.; Elant'ev, A. I.
Title Effect of a high magnetic field on the spectrum of donors in InSb Type Journal Article
Year 1977 Publication Fizika i Tekhnika Poluprovodnikov Abbreviated Journal Fizika i Tekhnika Poluprovodnikov
Volume 11 Issue 12 Pages (down) 2373-2375
Keywords InSb, energy spectrum, donors, high magnetic field
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Language Russian Summary Language Original Title
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Notes Воздействие сильного магнитного поля на спектр доноров в InSb Approved no
Call Number Serial 1729
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Author Karasik, B. S.; Gol'tsman, G. N.; Voronov, B. M.; Svechnikov, S. I.; Gershenzon, E. M.; Ekstrom, H.; Jacobsson, S.; Kollberg, E.; Yngvesson, K. S.
Title Hot electron quasioptical NbN superconducting mixer Type Journal Article
Year 1995 Publication IEEE Trans. Appl. Supercond. Abbreviated Journal IEEE Trans. Appl. Supercond.
Volume 5 Issue 2 Pages (down) 2232-2235
Keywords NbN HEB mixers
Abstract Hot electron superconductor mixer devices made of thin NbN films on SiO/sub 2/-Si/sub 3/N/sub 4/-Si membrane have been fabricated for 300-350 GHz operation. The device consists of 5-10 parallel strips each 5 /spl mu/m long by 1 /spl mu/m wide which are coupled to a tapered slot-line antenna. The I-V characteristics and position of optimum bias point were studied in the temperature range 4.5-8 K. The performance of the mixer at higher temperatures is closer to that predicted by theory for uniform electron heating. The intermediate frequency bandwidth versus bias has also been investigated. At the operating temperature 4.2 K a bandwidth as wide as 0.8 GHz has been measured for a mixer made of 6 nm thick film. The bandwidth tends to increase with operating temperature. The performance of the NbN mixer is expected to be better for higher frequencies where the absorption of radiation should be more uniform.
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ISSN 1051-8223 ISBN Medium
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Notes Approved no
Call Number Serial 1622
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Author Gol'tsman, G. N.; Kouminov, P.; Goghidze, I.; Gershenzon, E. M.
Title Nonequilibrium kinetic inductive response of YBaCuO thin films to low-power laser pulses Type Journal Article
Year 1994 Publication Phys. C: Supercond. Abbreviated Journal Phys. C: Supercond.
Volume 235-240 Issue Pages (down) 1979-1980
Keywords YBCO HTS KID
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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ISSN 0921-4534 ISBN Medium
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Notes Approved no
Call Number Serial 1634
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Author Zhang, Wen; Li, Ning; Jiang, Ling; Miao, Wei; Lin, Zhen-Hui; Yao, Qi-Jun; Shi, Sheng-Cai; Chen, Jian; Wu, Pei-Heng; Svechnikov, S. I.; Vachtomin, Y. B.; Antipov, S. V.; Voronov, B. M.; Gol'tsman, G. N.
Title Noise behaviour of a THz superconducting hot-electron bolometer mixer Type Journal Article
Year 2007 Publication Chinese Phys. Lett. Abbreviated Journal Chinese Phys. Lett.
Volume 24 Issue 6 Pages (down) 1778-1781
Keywords NbN HEB mixers
Abstract A quasi-optical superconducting NbN hot-electron bolometer (HEB) mixer is measured in the frequency range of 0.5–2.5 THz for understanding of the frequency dependence of noise temperature of THz coherent detectors. It has been found that noise temperature increasing with frequency is mainly due to the coupling loss between the quasi-optical planar antenna and the superconducting HEB bridge when taking account of non-uniform distribution of high-frequency current. With the coupling loss corrected, the superconducting HEB mixer demonstrates a noise temperature nearly independent of frequency.
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ISSN 0256-307X ISBN Medium
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Notes Approved no
Call Number Serial 1430
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Author Gershenzon, E. M.; Gol'tsman, G. N.; Gogidze, I. G.; Gusev, Yu. P.; Elantiev, A. I.; Karasik, B. S.; Semenov, A. D.
Title Millimeter and submillimeter wave range mixer based on electronic heating of superconducting films in the resistive state Type Journal Article
Year 1990 Publication Sov. Supercond. Abbreviated Journal Sov. Supercond.
Volume 3 Issue 10 Pages (down) 1582-1597
Keywords HEB mixers
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Notes Approved no
Call Number Serial 240
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