Superconductivity Can Induce Magnetism

When an electrical current passes through a wire it emanates heat -- a principle that's found in toasters and incandescent light bulbs. Some materials, at low temperatures, violate this law and carry current without any heat loss. But this seemingly trivial property, superconductivity, is now at the forefront of our understanding of physics. Scientists now show that, contrary to previous belief, superconductivity can induce magnetism, which has raised a new quantum conundrum.

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