A new wave in ultrafast magnetic switching, for faster writing to computer memory
https://www.eurekalert.org/news-releases/1079157
"overcomes challenges when magnetic fields change faster than material's response time... supercurrents in superconducting YBa₂Cu₃O₇ thin disc exposed to external magnetic field disrupted using fs-scale laser pulses to generate ultrafast magnet by switching any magnetic sample between stable unipolar magnetic states, producing ps-scale rise/ quenching super-ns-scale decay times... non-equilibrium matter states, magnetic memory with fast writing"