Controlling magnetism in a device is not easy; unusually large magnetic fields or lots of electricity are needed, which are bulky, slow, expensive and/or waste energy. But that looks soon to change, ...
De Gennes' superconducting switch showed the way 60 years ago In 1966, Pierre-Gilles de Gennes proposed a mechanism for switching superconductivity on and off in a magnetic device. This involved a ...
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