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Superconductive quantum interference device in high temperature environments having reduced inductance and improved thermal noise response
Superconductive quantum interference device in high temperature environments having reduced inductance and improved thermal noise response
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机译:高温环境中的超导量子干涉装置,具有减小的电感和改善的热噪声响应
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摘要
Since a superconducting quantum interference device (SQUID) using a high temperature superconductor operates at the liquid nitrogen temperature 77 K, which is higher than the liquid helium temperature 4.2 K, it is necessary that the value of signal voltages is at a level, which is sufficiently higher than the thermal noise level. The superconducting inductance L should be decreased with increasing current flowing through Josephson junctions in the SQUID. The superconducting inductance can be reduced by various methods such as reduction in the size of the aperture of the superconducting inductance, parallel connection of superconducting inductances, utilization of a superconducting ground plane, etc., in order to realize a SQUID, which can be use in a wide application field at the liquid nitrogen temperature 77 K.
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