A neutron-scattering study of the overbending of the [100]LO phonon mode in diamond

被引：31

作者：

Kulda, J ^{[1
]}

Dorner, B ^{[1
]}

Roessli, B ^{[1
]}

Sterner, H ^{[1
]}

Bauer, R ^{[1
]}

May, T ^{[1
]}

Karch, K ^{[1
]}

Pavone, P ^{[1
]}

Strauch, D ^{[1
]}

机构：

[1] UNIV REGENSBURG,INST THEORET PHYS,D-93040 REGENSBURG,GERMANY

来源：

SOLID STATE COMMUNICATIONS | 1996年 / 99卷 / 11期

关键词：

insulators; optical properties; phonons; inelastic light scattering; neutron scattering;

D O I：

10.1016/0038-1098(96)00323-7

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present new data on the dispersion of the longitudinal optic (LO) phonons along the [100] direction in diamond obtained by neutron inelastic scattering and by first principles calculations using two different pseudopotentials for the carbon atom. The experimental and theoretical results are found to be in excellent quantitative agreement, providing a clear evidence for a maximum of the LO phonon dispersion curve lying above the Gamma-point frequency. Copyright (C) 1996 Elsevier Science Ltd

引用

页码：799 / 802

页数：4

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