Bizarre 'demon' particle found inside superconductor could help unlock a 'holy grail' of physics
An elusive"demon" particle has been observed inside a superconductor nearly 70 years after it was first predicted. Its discovery could help resolve the mystery of how superconductors work.
David Pines first conceived of his demon in 1956, predicting it would emerge inside certain metals when two sets of electrons at different energy bands form two plasmons. If these plasmons fell out of phase with each other, such that the peaks of one line up with the valleys of the other, they could partially cancel out.
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