ORDER PARAMETER AND A CRITICAL-POINT ON THE MEGABAR-PRESSURE HYDROGEN-A PHASE LINE

被引：28

作者：

LORENZANA, HE

SILVERA, IF

GOETTEL, KA

机构：

[1] COLL FRANCE,F-75231 PARIS 05,FRANCE

[2] ECOLE NORM SUPER,SPECT HERTZIENNE LAB,F-75231 PARIS 05,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.65.1901

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present experimental evidence that a critical point, also reported by Hemley and Mao, exists for the hydrogen-A phase line at a pressure of 173(4) GPa and 151(15) K. We give an interpretation of this critical point in terms of its relationship to a low-pressure disordered insulating phase and a possible metallic phase at high pressure. We interpret the temeprature dependence of the vibron frequency of the H-A phase as a measure of one of the two order parameters characterizing this phase. © 1990 The American Physical Society.

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页码：1901 / 1904

页数：4

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