2-DIMENSIONAL METALLIC HYDROGEN IN THE POTASSIUM-HYDROGEN-GRAPHITE TERNARY INTERCALATION COMPOUND

被引：18
作者：
MIYAJIMA, S
KABASAWA, M
CHIBA, T
ENOKI, T
MARUYAMA, Y
INOKUCHI, H
机构：
[1] TOKYO INST TECHNOL,DEPT CHEM,MEGURO KU,TOKYO 152,JAPAN
[2] INST MOLEC SCI,OKAZAKI,AICHI 444,JAPAN
来源：
PHYSICAL REVIEW LETTERS | 1990年 / 64卷 / 03期
关键词：
D O I：
10.1103/PhysRevLett.64.319
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A proton NMR study was carried out on the stage-1 potassium-hydrogen- graphite ternary intercalation compound C4KHx, prepared through direct intercalation of potassium hydride into graphite. Line-shape analysis revealed extremely dense two-dimensional packing of negatively charged hydride ions where hydrogen-hydrogen direct contact takes place. The metallic nature of hydrogen was observed through the Korringa term, (T1T)-1=6.4×10-4 s-1 K-1, where T1 is the spin-lattice relaxation time. C4KHx is thus proven to be an example of two-dimensional metallic hydrogen. © 1990 The American Physical Society.
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页码：319 / 322
页数：4
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