Phonon dispersion of diamond measured by inelastic x-ray scattering

被引：92

作者：

Schwoerer-Bohning, M

Macrander, AT

Arms, DA

机构：

[1] Argonne Natl Lab, Adv Photon Source, Expt Facil Div, Argonne, IL 60439 USA

[2] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

[3] Univ Illinois, Frederick Seitz Mat Res Lab, Urbana, IL 61801 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.80.5572

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on a study of phonons in diamond using a new instrument for high resolution inelastic x-ray scattering at the Advanced Photon Source. We have paid particular attention to possible overbending of the most energetic branches, i.e., LO along both Gamma - X (= Delta) and Gamma - L (= Lambda) and the elliptically polarized Sigma(3) branch along Gamma - K (= Sigma). Overbending along all three directions has been invoked in recent years to explain a famous and extraordinary peak in the two-phonon Raman spectrum. Our data reveal overbending only along Delta.

引用

页码：5572 / 5575

页数：4

共 24 条

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