Two-phonon contributions to inelastic x-ray scattering spectra of MgB2

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dc.creatorBaron, A. Q. R.
dc.creatorUchiyama, H.
dc.creatorHeid, R.
dc.creatorBohnen, K. -P.
dc.creatorTanaka, Y.
dc.creatorTsutsui, S.
dc.creatorIshikawa, D.
dc.creatorLee, S.
dc.creatorTajima, S.
dc.date2007-02-02
dc.date.accessioned2026-07-07T07:44:25Z
dc.date.available2026-07-07T07:44:25Z
dc.descriptionTwo-phonon contributions to meV-resolved inelastic x-ray scattering spectra of MgB2 at 300K are identified, in good agreement, in both intensity and energy, with a harmonic calculation using the force constant matrix from ab-inito LDA calculations. This contribution impacts the determination of the linewidth of the E2g phonon mode that is so important for the high Tc of this material. To the best of our knowledge, this is the first observation of peaks in measurements of phonon dispersion (q>0) due to 2-phonon scattering in a non-rare-gas solid.
dc.description8 Pages, 4 Figures Please reference Phys. Rev. B 75, 020505(R), 2007
dc.identifierhttps://arxiv.org/abs/cond-mat/0702037
dc.identifierhttp://arxiv.org/abs/cond-mat/0702037
dc.identifierPHYSICAL REVIEW B 75, 020505(R) 2007
dc.identifierdoi:10.1103/PhysRevB.75.020505
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/123189
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleTwo-phonon contributions to inelastic x-ray scattering spectra of MgB2
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