Off-center impurity in alkali halides: reorientation, electric polarization and pairing to F center. II. In-plane rotation and polarizability

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dc.creatorBaldacchini, G.
dc.creatorMontereali, R. M.
dc.creatorGrassano, U. M.
dc.creatorScacco, A.
dc.creatorPetrova, P.
dc.creatorMladenova, M.
dc.creatorIvanovich, M.
dc.creatorGeorgiev, M.
dc.date2007-10-02
dc.date.accessioned2026-07-07T08:33:40Z
dc.date.available2026-07-07T08:33:40Z
dc.descriptionBecause of its inherent 2-D character, the eigenvalue equation for the hindered rotation around a normal cation site of an off-center impurity nearest-neighboring an F center is the well-known Mathieu equation. We present an overview of literature data on Mathieu's periodic functions providing exact solutions to the Li+ reorientational problem. We compare them with bottom-well approximating solutions by harmonic-oscillator functions at an effective vibrational frequency renormalized by both first- and third- order electron-mode coupling. We finally discuss the in-plane inversion polarizability of an off-center impurity assumed to form a dipole-dipole coupling with a nearby F center.
dc.description14 pages including 2 tables and 3(4) figures, all pdf format
dc.identifierhttps://arxiv.org/abs/0710.0650
dc.identifierhttp://arxiv.org/abs/0710.0650
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/139214
dc.subjectChemical Physics
dc.titleOff-center impurity in alkali halides: reorientation, electric polarization and pairing to F center. II. In-plane rotation and polarizability
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