Observation of local chiral-symmetry breaking in globally centrosymmetric crystals

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dc.creatorDi Matteo, S.
dc.creatorJoly, Y.
dc.creatorBombardi, A.
dc.creatorPaolasini, L.
dc.creatorde Bergevin, F.
dc.creatorNatoli, C. R.
dc.date2003-07-17
dc.date.accessioned2026-07-07T02:52:26Z
dc.date.available2026-07-07T02:52:26Z
dc.descriptionA thorough tensor analysis of the Bragg-forbidden reflection (00.3)$_h$ in corundum systems having a global center of inversion, like V$_2$O$_3$ and $α$-Fe$_2$O$_3$, shows that anomalous x-ray resonant diffraction can access chiral properties related to the dipole-quadrupole (E1-E2) channel via an interference with the pure quadrupole-quadrupole (E2-E2) process. This is also confirmed by independent {\it ab initio} numerical simulations. In such a way it becomes possible, in this particular case, to estimate the intensity of the ``twisted'' trigonal crystal field ($C_3$ symmetry) and, in general, to detect chiral quantities in systems where dichroic absorption techniques are ineffective.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0307441
dc.identifierhttp://arxiv.org/abs/cond-mat/0307441
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/21837
dc.subjectStrongly Correlated Electrons
dc.titleObservation of local chiral-symmetry breaking in globally centrosymmetric crystals
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