Ultrafast superconductive switch

The transition from superconductive to resistive state caused by infrared radiation and bias current pulses was investigated in order to minimize switching time tau and driving power W. Experimental results for Nb microstrips confirm the correctness of calculations based on the model of electron hea...

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Veröffentlicht in:	IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) 1991-03, Vol.27 (2), p.2844-2846
Hauptverfasser:	Gershenzon, E.M., Gol'tsman, G.N., Dzardanov, A.L., Zorin, M.A.
Format:	Artikel
Sprache:	eng
Schlagworte:	440200 > Radiation Effects on Instrument Components, Instruments, or Electronic Systems 665411 > Basic Superconductivity Studies-- (1992-) ALKALINE EARTH METAL COMPOUNDS Applied sciences BARIUM COMPOUNDS BARIUM OXIDES CALCULATION METHODS CHALCOGENIDES CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY COPPER COMPOUNDS COPPER OXIDES DATA ELECTRICAL EQUIPMENT ELECTROMAGNETIC PULSES ELECTROMAGNETIC RADIATION ELECTRONIC CIRCUITS Electronics Electrons ELEMENTS Exact sciences and technology EXPERIMENTAL DATA Heating INFORMATION INFRARED RADIATION INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY METALS NIOBIUM NUMERICAL DATA OXIDES OXYGEN COMPOUNDS Pulse measurements PULSES RADIATIONS RESISTORS Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices Strips SUPERCONDUCTING DEVICES Superconducting films Superconducting transition temperature Superconductivity Switches SWITCHING CIRCUITS TRANSITION ELEMENT COMPOUNDS TRANSITION ELEMENTS Yttrium barium copper oxide YTTRIUM COMPOUNDS 665412 > Superconducting Devices-- (1992-) YTTRIUM OXIDES
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Zusammenfassung:	The transition from superconductive to resistive state caused by infrared radiation and bias current pulses was investigated in order to minimize switching time tau and driving power W. Experimental results for Nb microstrips confirm the correctness of calculations based on the model of electron heating. For Nb switches, tau measured directly is 0.3-0.8 ns for radiation pulses and 1-3 ns for bias current pulses at T=4.2 K, while for YBaCuO switches at T=77 K it is expected to be several picoseconds. For an YBaCuO sample with the dimensions of 520.15 mu m/sup 2/, W was 10 mW, and it can be further reduced to the order of several microwatts by decreasing the volume of the sample.
ISSN:	0018-9464 1941-0069
DOI:	10.1109/20.133801