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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 (up) 1582-1597
Keywords HEB mixers
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Notes Approved no
Call Number Serial 240
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Author Burke, P. J.; Schoelkopf, R. J.; Prober, D. E.; Skalare, A.; Karasik, B. S.; Gaidis, M. C.; McGrath, W. R.; Bumble, B.; LeDuc, H. G.
Title Mixing and noise in diffusion and phonon cooled superconducting hot-electron bolometers Type Journal Article
Year 1999 Publication J. Appl. Phys. Abbreviated Journal
Volume 85 Issue 3 Pages (up) 1644-1653
Keywords HEB, mixer
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ISSN 0021-8979 ISBN Medium
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Notes Approved no
Call Number Serial 556
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Author Danerud, M.; Winkler, D.; Lindgren, M.; Zorin, M.; Trifonov, V.; Karasik, B. S.; Gol’tsman, G. N.; Gershenzon, E. M.
Title Nonequilibrium and bolometric photoresponse in patterned YBa2Cu3O7−δ thin films Type Journal Article
Year 1994 Publication J. Appl. Phys. Abbreviated Journal J. Appl. Phys.
Volume 76 Issue 3 Pages (up) 1902-1909
Keywords YBCO HTS HEB detector, nonequilibrium response
Abstract Epitaxial laser deposited YBa2Cu3O7−δ films of ∼50 nm thickness were patterned into detectors consisting of ten parallel 1 μm wide strips in order to study nonequilibrium and bolometric effects. Typically, the patterned samples had critical temperatures around 86 K, transition widths around 2 K and critical current densities above 1×106A/cm2 at 77 K. Pulsed laser measurements at 0.8 μm wavelength (17 ps full width at half maximum) showed a ∼30 ps response, attributed to electron heating, followed by a slower bolometric decay. Amplitude modulation in the band fmod=100 kHz–10 GHz of a laser with wavelength λ=0.8 μm showed two different thermal relaxations in the photoresponse. Phonon escape from the film (∼3 ns) is the limiting process, followed by heat diffusion in the substrate. Similar relaxations were also seen for λ=10.6 μm. The photoresponse measurements were made with the film in the resistive state and extended into the normal state. These states were created by supercritical bias currents. Measurements between 75 and 95 K (i.e., from below to above Tc) showed that the photoresponse was proportional to dR/dT for fmod=1 MHz and 4 GHz. The fast response is limited by the electron‐phonon scattering time, estimated to 1.8 ps from experimental data. The responsivity both at 0.8 and 10.6 μm wavelength was ∼1.2 V/W at fmod=1 GHz and the noise equivalent power was calculated to 1.5×10−9 WHz−1/2 for the fast response.
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ISSN 0021-8979 ISBN Medium
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Notes Approved no
Call Number Serial 1637
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Author Karasik, B.S.; Milostnaya, I.I.; Zorin, M.A.; Elantev, A.I.; Gol'tsman, G.N.; Gershenzon, E.M.
Title Subnanosecond S-N and N-S switching of YBCO film induced by current pulse Type Journal Article
Year 1994 Publication Phys. C: Supercond. Abbreviated Journal Phys. C: Supercond.
Volume 235-240 Issue Pages (up) 1981-1982
Keywords YBCO HTS switches
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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ISSN 0921-4534 ISBN Medium
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Notes Approved no
Call Number Serial 1633
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Author Gershenson, M. E.; Gong, D.; Sato, T.; Karasik, B. S.; Sergeev, A. V.
Title Millisecond electron-phonon relaxation in ultrathin disordered metal films at millikelvin temperatures Type Journal Article
Year 2001 Publication Appl. Phys. Lett. Abbreviated Journal
Volume 79 Issue Pages (up) 2049-2051
Keywords HEB detector, FIR, far infrared
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Notes Approved no
Call Number RPLAB @ s @ heb_eph_interaction_Gershenzon Serial 315
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