Giant Noise in a Superconductor-Magnet Sandwich ⚡ экспресс
Original: "Giant shot noise in superconductor/ferromagnet junctions with orbital-symmetry-controlled spin-orbit coupling"
Electrical noise in a sandwich of superconductor, insulator, and magnet turned out to be hundreds of times larger than expected, pointing to the birth of a new kind of superconductivity.
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In ordinary wiring, noise is a nuisance. But in a nanosandwich of superconductor, insulator, and magnet, giant noise revealed hidden superconductivity where current shouldn't flow without resistance. This discovery will enable a new kind of electronics that controls electron spin.
🎯 Iron, normally a magnet, in this structure temporarily turns into a superconductor—current flows without resistance through it.
S_I = 2eI
S_I is the power spectral density of shot noise, e is the electron charge, I is the average current