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With ongoing instrumental improvements Raman spectroscopy (RS) is advancing into the study of surface vibrational modes of semiconductors. On compound semiconductors, like the III–V's, two distinct types of surface modes occur, microscopic modes being vibrations confined to the surface and macroscopic modes penetrating much deeper into the bulk, dependent on the electromagnetic boundary conditions. Both mode types depend on surface properties, the microscopic ones on the atomic scale, and the macroscopic ones on the scale of the surface polariton wavelength. While the former one delivers surface atomic structure information, the latter one may be useful for instance to study the morphology of surfaces, such as the shape of semiconductor nanowires. We discuss Raman spectra obtained on the atomically well‐defined III–V(110) model surfaces and recent results obtained on isolated III–V …
Publication date: 
1 Jan 2015

Eugen Speiser, Karsten Hinrichs, Paola Prete, Nico Lovergine, Norbert Esser

Biblio References: 
Volume: 252 Issue: 1 Pages: 11-18
physica status solidi (b)