Subwavelength localized helicity-independent magnetic bit switching using an ultrafast laser pulse and plasmonic gold nanostructures

https://www.eurekalert.org/news-releases/1081550

"all-optical, single fs laser pulse, bit-switching without external magnetic field or complex wiring... overcomes nanoscale heat transfer/ magnetic domain wall propagation limits on minimum achievable bit size... electron beam lithography on 10 nm GdTbCo magnetic film generating large magnetic anisotropy... magnetic switching using 370 fs 1030 nm wavelength laser pulse in 240 nm width areas... nanostructure not allowing plasmonic resonance creates dipole-like far field scattering domain imprint on magnetic film"