Field emission of diamond surfaces by time-dependent density-functional calculations

被引：8

作者：

Araidai, M

Watanabe, K

机构：

[1] Tokyo Univ Sci, Fac Sci, Dept Phys, Shinjuku Ku, Tokyo 1628601, Japan

[2] Japan Sci & Technol Corp, Core Res Evolut Sci & Technol, Kawaguchi, Saitama 3320012, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 2003年 / 42卷 / 6B期

关键词：

ab initio calculation; diamond surface; field emission; band structures; time-dependent density-functional theory;

D O I：

10.1143/JJAP.42.L666

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The electron field emission (FE) of diamond C(100) 2 x I surfaces has been investigated using time-dependent density-functional calculations. Dangling-bond (DB) states are found to be the main source of FE current of a clean surface. Notwithstanding the disappearance of the DB states by hydrogen (H) termination of a surface, FE current increases compared with that from the clean surface. An important finding from a comparison with the FE of graphitic ribbons is that the electronic structures being influenced by either carbon atom geometry or H termination govern the microscopic mechanism of the FE of carbon materials.

引用

页码：L666 / L668

页数：3

共 20 条

[1] Simultaneous field emission and photoemission from diamond [J].