Optically excited structural transition fastest electronic switch ever observed

(Phys.org)—A team of researchers from several institutions in Germany has used laser pulses to change an atomic wire from an insulator to a metal and back again in what the group describes as the fastest electronic switch ever observed. In their paper published in the journal Nature, the team describes their experiments testing the boundaries of phase transition speeds, which have proven that it can occur much faster under certain conditions than was thought possible.

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