THEORY OF SURFACE ACOUSTIC PHONON NORMAL-MODES AND LIGHT-SCATTERING CROSS-SECTION IN A PERIODICALLY CORRUGATED SURFACE

被引：26

作者：

GIOVANNINI, L ^{[1
]}

NIZZOLI, F ^{[1
]}

MARVIN, AM ^{[1
]}

机构：

[1] UNIV CAGLIARI,DIPARTIMENTO SCI FIS,I-09100 CAGLIARI,ITALY

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.69.1572

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have developed a theory of surface acoustic phonon normal modes and of Brillouin-scattering ripple cross section for a periodically corrugated surface of an opaque material, in the small corrugation limit. Both the discrete and continuous spectra of acoustic modes on a grating have been studied within the elasticity theory. In the continuum, the Rayleigh wave becomes a resonance and hybridizes with the longitudinal pseudomode of the flat surface, giving rise to a gap. The theory explains quantitatively recent experimental results obtained for a shallow grating on a Si(001) surface.

引用

页码：1572 / 1575

页数：4

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