DETECTION OF THERMALLY GENERATED DEFECTS ON A CU(111) SURFACE

被引：15

作者：

BLOCH, J ^{[1
]}

LUPKE, G ^{[1
]}

JANZ, S ^{[1
]}

VANDRIEL, HM ^{[1
]}

机构：

[1] UNIV TORONTO,ONTARIO LASER & LIGHTWAVE RES CTR,TORONTO M5S 1A7,ONTARIO,CANADA

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.45.12011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A nonlinear-optical technique has been used to detect thermally generated atomic defects on the Cu(111) surface in ultrahigh vacuum. From the temperature dependence of the second-harmonic (SH) -generation efficiency and anisotropy for 350 < T < 850 K, we infer the creation of an increasing number of surface point defects with increasing temperature, and deduce a formation energy of 0.13 +/- 0.04 eV. This interpretation is corroborated by the similarity of the SH rotational anisotropy following surface Ar+-ion bombardment at low temperatures.

引用

页码：12011 / 12014

页数：4