Scientists have created the first-ever atomic movies showing how atoms rearrange locally within a quantum material as it transitions from an insulator to a metal.
Scientists demonstrated that a materials characterization technique can be successful at a new type of facility, and they used it to discover a hidden materials phase With the help of these movies, the researchers discovered a new material phase that settles a years-long scientific debate and could facilitate the design of new transitioning materials with commercial applications.
"It's hard to imagine how fast a picosecond really is," Griffiths said. In one second, light can travel around the Earth seven and a half times. But in one picosecond, light can only travel one third of a millimeter."The time scales are almost incomparable." "I was simply blown away by how well it worked," said Simon Billinge, a physicist in the X-ray Scattering Group and a professor at Columbia University's School of Engineering and Applied Science.
The team also included physicists from Columbia University, University of Wisconsin, Madison, DOE's Argonne National Laboratory, and the United Kingdom's Science and Technology Facilities Council. "It was just like how an earthquake on the ocean floor can disrupt a little bit of water and create a wave that eventually reaches the edge of the ocean," added Billinge.
Interestingly, the material was disordered for tens of picoseconds,"even though it started and ended in an ordered state," Griffiths said. He added,"Though we answered questions about material transition pathways, it seems as if we have opened a door rather than closing one.""We didn't just use the LCLS facilities at SLAC," Billinge explained."The people there were also integral to making ultrafast PDF a success."
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