STUDY OF THE (7X7)[--](1X1) SI(111) SURFACE TRANSITION BY SPECTROSCOPIC ELLIPSOMETRY NEAR THE PSEUDO-BREWSTER ANGLE

Authors
MULLER P GAUCH M QUENTEL G
Citation
P. Muller et al., STUDY OF THE (7X7)[--](1X1) SI(111) SURFACE TRANSITION BY SPECTROSCOPIC ELLIPSOMETRY NEAR THE PSEUDO-BREWSTER ANGLE, Surface science, 313(3), 1994, pp. 335-340
Citations number
26
Categorie Soggetti
Chemistry Physical
Journal title
Surface science → ACNP
ISSN journal
00396028
Volume
313
Issue
3
Year of publication
1994
Pages
335 - 340
Database
ISI
SICI code
0039-6028(1994)313:3<335:SOT(SS>2.0.ZU;2-3
Abstract
In this paper we study the (7 x 7) <-> (1 x 1) Si(111) surface transit ion by using spectroscopic ellipsometry near the pseudo-Brewster (PB) angle. At PB energy, tg psi (respectively cos DELTA) increases (decrea ses) linearly with different slopes according to T < T(c) or T > T(c). These two different slopes correspond to the two different (7 x 7) an d (1 x 1) superstructures. Around T(c), psi deviates from linearity. T his effect is attributed to an electrostatic interaction between (7 x 7) and (1 x 1) domains.