Spin polarization of the Si(111)-7 x 7 surface: A study with a spin-polarized metastable helium atom beam

被引：2

作者：

Kurahashi, M. ^{[1
]}

Pratt, A. ^{[1
,2
]}

Yamauchi, Y. ^{[1
]}

机构：

[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

[2] Univ York, Dept Phys, York Inst Mat Res, York YO10 5DD, N Yorkshire, England

来源：

SURFACE SCIENCE | 2011年 / 605卷 / 5-6期

关键词：

Silicon; Magnetic measurements; Metastable induced electron spectroscopy; MAGNETIC-PROPERTIES; SILICON; SPECTROSCOPY;

D O I：

10.1016/j.susc.2010.12.027

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have observed the electron spin polarization of a clean Si(111) surface under external magnetic fields of 0-5 T using a spin-polarized metastable helium atom beam. By making comparisons with metastable deexcitation spectroscopy (MDS) measurements, the spin polarization has been assigned to surface dangling bonds. It has been found that the spin polarization is largely quenched by the adsorption of atomic hydrogen, and that its H-exposure dependence correlates well with that of the MDS spectrum and the low energy electron diffraction pattern. (C) 2011 Elsevier B.V. All rights reserved.

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收藏

页码：612 / 615

页数：4

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