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Phonon-induced valence-charge relocation in cubic BN observed by ultrafast x-ray diffraction

Michael Woerner, Shekhar Priyadarshi, Isabel Gonzalez-Vallejo, Christoph Hauf, Klaus Reimann, and Thomas Elsaesser

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Abstract

Femtosecond x-ray powder diffraction reveals the impact of zone-edge TA-phonon excitations on the valence-charge distribution in cubic BN. Transient charge-density maps show a spatial transfer of valence charge from the interstitial region onto boron and nitrogen atoms.

© 2022 The Author(s)

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