Overbending of the longitudinal optical phonon branch in diamond as evidenced by inelastic neutron and x-ray scattering

被引：42

作者：

Kulda, J

Kainzmaier, H

Strauch, D

Dorner, B

Lorenzen, M

Krisch, M

机构：

[1] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

[2] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany

[3] European Synchrotron Radiat Facil, F-38043 Grenoble, France

来源：

PHYSICAL REVIEW B | 2002年 / 66卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.66.241202

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Overbending of the longitudinal-optical-phonon branch in diamond has been evidenced along all three principal directions by a joint inelastic neutron and x-ray experiment. The observed overbending of 1.5, 0.5, and 0.2 meV (along the Delta, Lambda, and Sigma directions, respectively) confirms previous ab initio lattice-dynamics calculations, thus providing experimental proof for the explanation of the anomalous peak in the two-phonon Raman spectrum.

引用

页码：1 / 4

页数：4

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