Surface phonons of D:Si(111)-(1x1)

被引：12

作者：

Graschus, V ^{[1
]}

Mazur, A ^{[1
]}

Pollmann, J ^{[1
]}

机构：

[1] UNIV MUNSTER,INST THEORET PHYS FESKORPERPHYS 2,D-48149 MUNSTER,GERMANY

来源：

SURFACE SCIENCE | 1996年 / 368卷

关键词：

adatoms; electron energy loss spectroscopy; low index single crystal surfaces; phonons; semi-empirical models and model calculations; silicon-germanium; surface relaxation and reconstruction;

D O I：

10.1016/S0039-6028(96)01047-3

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：

In this short contribution we present and discuss the surface-phonon spectrum and spectral densities for the deuterium-terminated Si(111)-(1x1) surface. Our calculations, which are based on a semi-empirical total-energy approach, yield salient adsorbate- and substrate-induced vibrational modes. An analysis of these modes in comparison with previous results for H:Si(111)-(1x1) and H:C(111)-(1x1) turns out to be very revealing, since D:Si(111)-(1x1) proves to be an interesting connecting link between the former two systems as far as surface vibrational properties are concerned. The physical origin of surface modes becomes particularly transparent by relating them to the specifically different mass misfits between respective adsorbate and substrate atoms in the three systems.

引用

页码：179 / 184

页数：6

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