A 'supra' new kind of froth

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The supra froth pattern in superconducting lead (green) surrounded by the froth pattern of soap bubbles (blue).
The supra froth pattern in superconducting lead (green) surrounded by the froth pattern of soap bubbles (blue).

To see the latest science of type-I superconductors, look no further than the froth on a morning cup of cappuccino. A team of U.S. Department of Energy's Ames Laboratory physicists and collaborating students have found that the bubble-like arrangement of magnetic domains in superconducting lead exhibits patterns that are very similar to everyday froths like soap foam or frothed milk on a fancy coffee.


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