Dynamical Diffraction Theory for Wave Packet Propagation in Deformed Crystals

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dc.creatorSawada, Kei
dc.creatorMurakami, Shuichi
dc.creatorNagaosa, Naoto
dc.date2006-01-31
dc.date2006-04-22
dc.date.accessioned2026-07-07T07:01:23Z
dc.date.available2026-07-07T07:01:23Z
dc.descriptionWe develop a theory for the trajectory of an x ray in the presence of a crystal deformation. A set of equations of motion for an x-ray wave packet including the dynamical diffraction is derived, taking into account the Berry phase as a correction to geometrical optics. The trajectory of the wave packet has a shift of the center position due to a crystal deformation. Remarkably, in the vicinity of the Bragg condition, the shift is enhanced by a factor $ω/Δω$ ($ω$: frequency of an x ray, $Δω$: gap frequency induced by the Bragg reflection). Comparison with the conventional dynamical diffraction theory is also made.
dc.description4 pages, 2 figures. Title changed
dc.identifierhttps://arxiv.org/abs/cond-mat/0602001
dc.identifierhttp://arxiv.org/abs/cond-mat/0602001
dc.identifierPhys. Rev. Lett. 96, 154802 (2006)
dc.identifierdoi:10.1103/PhysRevLett.96.154802
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/108254
dc.subjectMaterials Science
dc.titleDynamical Diffraction Theory for Wave Packet Propagation in Deformed Crystals
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