Quantum-sized au structures on Si(111) studied by spectroscopic ellipsometry

被引:4
作者
OMahony, JD [1 ]
McGilp, JF [1 ]
Musters, PAM [1 ]
Verbruggen, MHW [1 ]
Flipse, CFJ [1 ]
机构
[1] UNIV DUBLIN TRINITY COLL,DEPT PURE & APPL PHYS,DUBLIN 2,IRELAND
关键词
ellipsometry; gold; low index single crystal surfaces; metal-semiconductor interfaces; metallic surfaces; quantum effects; silicon; surface electronic phenomena; vicinal single crystal surfaces;
D O I
10.1016/0039-6028(96)00755-8
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
Spectroscopic ellipsometry has been used to follow the initial stages of the growth of Au on both singular and vicinal Si(lll) surfaces. The imaginary part of the pseudo dielectric function shows an distinctive sharp peak at 2.7 eV, at the point where the single-domain pseudo-5 x 1 low energy electron diffraction pattern is strongest for Au growth on the stepped Si(lll) surface. The singular system behaves differently. The unusual optical behaviour of the Au-induced 5 x 2 reconstruction is attributed to the recently-discovered quasi one-dimensional electronic structure of this system.
引用
收藏
页码:801 / 806
页数:6
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