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prEN IEC 61788-22-2:2020

Normal state resistance and critical current measurement - High-Tc Josephson junction

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IEC 61788-22-2:202X; prEN IEC 61788-22-2:2020
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This International Standard is applicable to high-Tc Josephson junctions. It specifies terms, definitions, symbols and the measurement and estimation method for normal state resistance (Rn) and intrinsic critical current (Ici). An Rn value represents the resistance of a weak link between two HTSs when they are in a normal-conducting state. An Ici value represents the maximum direct current without a voltage drop between two HTSs in a superconducting state when there is no noise-rounding effect on a U-I characteristic curve. The weak link can be formed with step-edge, ramp-edge or other structures. The IciRn product gives an important parameter for designing superconductor devices.
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