Research NewsMicroelectronics

The Transistor With a Heart of Gold

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Science  23 Jan 1998:
Vol. 279, Issue 5350, pp. 484
DOI: 10.1126/science.279.5350.484

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A team of researchers at Groningen University in the Netherlands has a new design for a superconducting transistor that uses a thin layer of gold in place of the so-called Josephson junction. While its speed still falls short of the best conventional devices, the novel design, to be published in Applied Physics Letters, gives it a key advantage over Josephson junctions: It can not only act as an on-off switch, but can also perform the other function of normal transistors--amplifying an incoming current.