Infrared study of hydrogen up to 310GPa at room temperature

被引:23
|
作者
Eremets, M. I. [1 ]
Troyan, I. A. [1 ]
Lerch, Ph. [2 ]
Drozdov, A. [1 ]
机构
[1] Max Planck Inst Chem, Biogeochem Dept, D-55020 Mainz, Germany
[2] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland
基金
欧洲研究理事会;
关键词
hydrogen; phases of hydrogen; infrared spectroscopy; megabar pressures;
D O I
10.1080/08957959.2013.794229
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We observed a strong difference of the pressure dependence of the infrared (IR) active molecular vibron of hydrogen in phase IV in the 200-310GPa pressure range in comparison with the Raman vibrons. While the Raman vibron strongly splits (approximate to 250cm(-1)) at the transition from phases III to IV at 220GPa, the IR vibron nearly does not change. This small spitting of IR vibron is not described by the graphene-like structure proposed for phase IV. The combined pressure dependence of Raman and IR vibrons provides a sensitive test for further theoretical models of phase IV.
引用
收藏
页码:377 / 380
页数:4
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