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Danny Wilms Floet |
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Title |
Hotspot mixing in THz niobium superconducting hot electron bolometer mixers |
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2001 |
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Delft University of Technology |
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Ph.D. thesis |
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Netherlands |
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932 |
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ГОСТ 2.125-2008 ЕСКД Правила выполнения эскизных конструкторских документов |
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2008 |
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RPLAB @ kostochkin @ |
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934 |
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Author |
Zmuidzinas, J.; Betz A. L.; Boreiko R.T. |
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Title |
A corner-reflector mixer mount for far infrared wavelengths |
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1989 |
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Infrared Phys. |
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29 |
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119-131 |
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A new type of corner-reflector mixer mount, which has the advantages of ease of fabrication and assembly as well as frequency versatility, has been designed and constructed. The mixer works with arbitrary antenna lengths 241 with the reflector to antenna spacing adjusted to give a strong and symmetric central lobe. The predicted response patterns have been experimentally verified for various antenna lengths and operating frequencies between 800 and 2000 GHz. An important design feature is the incorporation of a microstrip matching network which eliminates IF impedance mismatch and provides mechanical isolation for the whisker antenna. |
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RPLAB @ atomics90 @ |
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944 |
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Kerr, A. R.; Feldman, M. J.; Pan, S.-K. |
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Receiver noise temperature, the quantum noise limit, and the role of the zero-point fluctuations |
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1996 |
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Electronics division internal report NO. 304 |
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1-10 |
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RPLAB @ atomics90 @ |
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947 |
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Bell, M.; Sergeev, A.; Mitin, V.; Bird, J.; Verevkin, A.; Gol'tsman, G. |
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One-dimensional resistive states in quasi-two-dimensional superconductors |
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2007 |
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arXiv:0709.0709v1 [cond-mat.supr-con] |
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1-11 |
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We investigate competition between one- and two-dimensional topological excitations – phase slips and vortices – in formation of resistive states in quasi-two-dimensional superconductors in a wide temperature range below the mean-field transition temperature T(C0). The widths w = 100 nm of our ultrathin NbN samples is substantially larger than the Ginzburg-Landau coherence length ξ = 4nm and the fluctuation resistivity above T(C0) has a two-dimensional character. However, our data shows that the resistivity below T(C0) is produced by one-dimensional excitations, – thermally activated phase slip strips (PSSs) overlapping the sample cross-section. We also determine the scaling phase diagram, which shows that even in wider samples the PSS contribution dominates over vortices in a substantial region of current/temperature variations. Measuring the resistivity within seven orders of magnitude, we find that the quantum phase slips can only be essential below this level. |
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RPLAB @ atomics90 @ |
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948 |
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