Nano-patterned superconducting thin films could lead to new electronic devices

It has been a long-standing dream to fabricate superconducting nano-scale wires for faster, more powerful electronics. However, this has turned out to be very difficult if not impossible with conventional superconductors because the minimal size for the sample to be superconducting - known as the coherence length - is large. A group of scientists has now fabricated thin films patterned with large arrays of nanowires and loops that are superconducting when cooled below about 30 kelvin (-243 degrees Celsius). Even more interesting, they found they could change their resistance by applying a magnetic field.

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