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Dynamic Pair Distribution Function of polycrystalline beryllium. At the plasmon energy (~ 21 eV), the exchange–correlation hole is extended up to 4-5 Å.
Scientific Achievement: Using polycrystalline beryllium as a test case, researchers demonstrated that dynamic electron correlations can be probed directly with inelastic x-ray scattering.
Significance and Impact: This work establishes a new experimental approach for directly measuring dynamic electron correlations in solids, enabling critical tests of theoretical predictions in a field that has traditionally relied on theory.
DOI: 10.1103/vzrc-5m39
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