Phonon dispersion of indium along [111]

被引：3

作者：

Bakulin, AS ^{[1
]}

Overhauser, AW

Kaiser, H

Werner, SA

Fernandez-Baca, JA

Smith, HG

机构：

[1] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA

[2] Univ Missouri, Dept Phys & Astron, Columbia, MO 65211 USA

[3] Univ Missouri, Res Reactor Ctr, Columbia, MO 65211 USA

[4] Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.63.052301

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The phonon spectrum of indium along [111], measured by inelastic neutron scattering, is reported. The two shear modes at the zone-boundary point (1/2, 1/2, 1/2) are split slightly ton account of a 7.5% tetragonal distortion). They have very low frequencies, similar to0.7 and 1.0 THz, compared to the longitudinal mode, similar to3.4 THz. These measurements verify the theoretical dispersion predicted by the dynamic pseudopotential theory of phonons for free-electron-like metals.

引用

页数：3

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