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This research demonstrates how ultrafast laser pulses can induce a stable, nonthermal conductive state in magnetoresistive manganites, effectively bypassing traditional thermal switching methods used in electronics and quantum materials. By utilizing X-ray techniques at NSLS-II to observe this phase transition within 100 femtoseconds, the study reveals new pathways for controlling material properties without electrodes or static fields. These findings offer significant potential advancements for high-speed data storage architectures and next-generation quantum computing components that rely on precise light-matter interactions.
100-Femtosecond Lasers Flip Insulators to Conductors at NSLS-II

NSLS-II scientists used ultrafast, 100-femtosecond lasers to instantly transform an electrical insulator into a conductor, revealing a hidden.
Scientists at the National Synchrotron Light Source II (NSLS-II) have demonstrated a method for instantly transforming an electrical insulator into a conductor using light, a feat accomplished with laser pulses lasting just 100 femtoseconds, or one hundred quadrillionths of a second. The research, focused on magnetoresistive manganites, reveals a previously inaccessible phase of matter and offers new insights into controlling materials for future technologies. “The switching mechanism is really fast, much faster…
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