Structure of Rb-III: Novel modulated stacking structures in alkali metals

被引：78

作者：

Nelmes, RJ

McMahon, MI

Loveday, JS

Rekhi, S

机构：

[1] Univ Edinburgh, Dept Phys & Astron, Edinburgh EH9 3JZ, Midlothian, Scotland

[2] Univ Edinburgh, Ctr Sci Extreme Condit, Edinburgh EH9 3JZ, Midlothian, Scotland

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.88.155503

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The crystal structure of Rb-III, stable between 13 and 17 GPa, has been determined from quasi-single-crystal x-ray diffraction data. It is orthorhombic, space group C222(1) , with 52 atoms in the unit cell, and has an 8-10-8-8-10-8 stacking of 8- and 10-atom layers. The recently reported 84-atom structure of Cs-III can be understood as an 8-8-10-8-8-8-8-10-8-8 stacking of the same layers. These represent a new class of modulated elemental structures.

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页码：1555031 / 1555034

页数：4

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