All-high-Tc superconductor rapid-single-flux-quantum circuit operating at ;30 K
نویسندگان
چکیده
We have implemented a simple circuit of the rapid single-flux-quantum ~RSFQ! logic family using a single-layer YBa2Cu3O72x thin-film structure with 14 in-plane Josephson junctions formed by direct electron beam writing. The circuit includes two dc/SFQ converters, two Josephson transmission lines, a complete RS SFQ flip-flop, and an SFQ/dc converter ~readout SQUID!. Low-frequency testing has shown that the dc-current-biased circuit operates correctly and reliably at T;30 K, a few degrees below the effective critical temperature of the junctions. Prospects for a further increase of the operation temperature and implementation of more complex RSFQ circuits are discussed in brief. © 1995 American Institute of Physics.
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تاریخ انتشار 1996