Lithium doesn't crack under pressure, it transforms

phys.org | 9/12/2018 | Staff
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Using cutting-edge theoretical calculations performed at NERSC, researchers at Berkeley Lab's Molecular Foundry have predicted fascinating new properties of lithium—a light alkali metal that has intrigued scientists for two decades with its remarkable diversity of physical states at high pressures.

"Under standard conditions, lithium is a simple metal that forms a textbook crystalline solid. However, scientists have shown that when you put a lithium crystal under pressure, the atomic structure changes and, somewhat counterintuitively, its conductivity drops, becoming less metallic," said Stephanie Mack, a graduate student research assistant at Berkeley Lab and first author of the study, published in PNAS. "We've discovered it also becomes topological, with...
(Excerpt) Read more at: phys.org
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