NMR observation of diffusion barriers for lithium adsorbed on Ru(001)

被引：29

作者：

Ebinger, HD

Jansch, HJ

Polenz, C

Polivka, B

Preyss, W

Saier, V

Veith, R

Fick, D

机构：

[1] UNIV MARBURG,WISSENSCH ZENTRUM MAT WISSENSCH,D-35032 MARBURG,GERMANY

[2] MAX PLANCK INST KERNPHYS,D-69029 HEIDELBERG,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.76.656

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The diffusion of lithium on a Ru(001) surface has been studied with nuclear magnetic resonance techniques using the radioactive isotope Li-8 as a probe. As a function of substrate temperature and alkali metal coverage the nuclear spin-lattice relaxation measurements show the existence of two distinctly different diffusion barriers on the surface, valued at 0.46 and 0.22 eV. The former is attributed to jumps from step to terrace sites, whereas the latter is the barrier between adjacent terrace sites. At 200 K the Li diffusion was observed from low to full coverage.

引用

页码：656 / 659

页数：4

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