Transverse acoustic phonons of GaSb up to 7 GPa by inelastic neutron scattering

被引：0

作者：

Klotz, S

Braden, M

Kulda, J

Pavone, P

Steininger, B

机构：

[1] Univ Paris 06, F-75252 Paris, France

[2] Forschungszentrum Karlsruhe, IFP, D-76021 Karlsruhe, Germany

[3] Ctr Etud Saclay, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France

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

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

来源：

PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 2001年 / 223卷 / 02期

关键词：

D O I：

10.1002/1521-3951(200101)223:2<441::AID-PSSB441>3.0.CO;2-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have investigated the pressure dependence of the phonon dispersion of the transverse acoustic branches of GaSb by inelastic neutron scattering at 300 K. Frequency variations were measured along the [100], [110], and [111] directions up to 7 GPa, i.e. over the entire stability range of the zincblende structure. A strong softening is observed for zone boundary modes. These results are compared with published data on Ge up to 10 GPa as well as with first-principle calculations. We find generally good agreement between experiment and theory. The calculations reveal a strong pressure dependence of the Gruneisen parameters.

引用

页码：441 / 447

页数：7

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