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Gershenson, M. E.; Gong, D.; Sato, T.; Karasik, B. S.; Sergeev, A. V. |
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Millisecond electron-phonon relaxation in ultrathin disordered metal films at millikelvin temperatures |
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2001 |
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Appl. Phys. Lett. |
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79 |
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2049-2051 |
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HEB detector, FIR, far infrared |
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RPLAB @ s @ heb_eph_interaction_Gershenzon |
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315 |
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Gershenzon, E. M.; Gol'tsman, G. N.; Gogidze, I. G.; Gusev, Yu. P.; Elantiev, A. I.; Karasik, B. S.; Semenov, A. D. |
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Millimeter and submillimeter wave range mixer based on electronic heating of superconducting films in the resistive state |
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1990 |
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Sov. Supercond. |
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Sov. Supercond. |
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3 |
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10 |
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1582-1597 |
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HEB mixers |
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240 |
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Gershenzon, E. M.; Gol'tsman, G. N.; Karasik, B. S.; Semenov, A. D. |
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Title |
Measurement of the energy gap in the compound YBaCu3O9-δ on the basis of the IR absorption spectrum |
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1987 |
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JETP Lett. |
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JETP Lett. |
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46 |
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5 |
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237-238 |
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Keywords |
YBCO HTS detectors |
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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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1703 |
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Gershenzon, E. M.; Gershenzon, M. E.; Gol'tsman, G. N.; Karasik, B. S.; Semenov, A. D.; Sergeev, A. V. |
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Light-induced heating of electrons and the time of the inelastic electron-phonon scattering in the YBaCuO compound |
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1987 |
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JETP Lett. |
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JETP Lett. |
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46 |
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6 |
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285-287 |
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Keywords |
YBCO HTS HEB |
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For the first time, measurements have been made on the electron energy relaxation time due to the electron--phonon interaction in films of the YBaCuO superconductor. The results indicate a significant intensification of the electron--phonon interaction in this compound as compared with normal superconducting metals. |
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1706 |
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Ekström, H.; Karasik, B.; Kollberg, E.; Yngvesson, K. S. |
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Title |
Investigation of a superconducting hot electron mixer |
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1994 |
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Proc. 5th Int. Symp. Space Terahertz Technol. |
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Proc. 5th Int. Symp. Space Terahertz Technol. |
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169-188 |
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Keywords |
HEB mixers |
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Mixing at 20 GHz in niobium superconducting thin film strips in the resistive state is studied. Experiments give evidence that electron-heating is the main cause of the non linear phenomena. The requirements on the mode of operation and on the film parameters for small conversion loss and the possibility of conversion gain are discussed. Measurements indicate a minimum intrinsic conversion loss around 1 dB with a sharp drop for the lowest voltage bias-points, and a DSB mixer noise temperature between 100 and 450 K at 20 GHz. The device output noise temperature at the mixer operating point can be as low as 30-50 K. A simple theory is presented, which is based on the assumption that the small signal resistance is linearly dependent on power. This type of mixer is considered very promising for use in low-noise heterodyne receivers at THz frequencies. |
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1642 |
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