INFRARED REFLECTANCE MEASUREMENTS OF THE INSULATOR-METAL TRANSITION IN SOLID HYDROGEN

被引：72

作者：

MAO, HK

HEMLEY, RJ

HANFLAND, M

机构：

[1] Geophysical Laboratory, Carnegie Institution of Washington, Washington, D.C. 20015, 5251 Broad Branch Road, NW

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.65.484

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Reflectance measurements on solid hydrogen to 177 GPa (1.77 Mbar) have been performed from near-infrared to ultraviolet wavelengths (0.5 to 3 eV). Above 150 GPa characteristic free-electron behavior in the infrared region is observed to increase sharply with increasing pressure. Analysis of volume dependence of the plasma frequency obtained from Drude-model fits to the spectra indicates that the pressure of the insulator-metal transition is 149 (±10) GPa at 295 K. The measurements are consistent with metallization by closure of an indirect gap in the molecular solid. © 1990 The American Physical Society.

引用

页码：484 / 487

页数：4

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