We present reflectance anisotropy spectra in the energy range 1.0-5.5 eV, measured for cleaved III-V surfaces after adsorption of caesium. In such a system Cs forms one-dimensional wire-like structures at low Cs coverages (Theta << 1 ML). The formation of these Cs wires leads to characteristic changes in the reflectance anisotropy spectra of the cleaved surface such as a minimum between the E-0 and E-1 bulk critical points of the substrate. For higher coverages the development of a two-dimensional layer can be optically monitored, as can the gradual transition to a three-dimensional disordered layer close to the saturation coverage.
Fleischer, K., Bussetti, G., Goletti, C., Richter, W., Chiaradia, P. (2004). Optical anisotropy of Cs nanostructures on III-V(110) surfaces. JOURNAL OF PHYSICS. CONDENSED MATTER, 16(39) [10.1088/0953-8984/16/39/010].
Optical anisotropy of Cs nanostructures on III-V(110) surfaces
BUSSETTI, GIANLORENZO;GOLETTI, CLAUDIO;RICHTER, WOLFGANG;CHIARADIA, PIETRO
2004-01-01
Abstract
We present reflectance anisotropy spectra in the energy range 1.0-5.5 eV, measured for cleaved III-V surfaces after adsorption of caesium. In such a system Cs forms one-dimensional wire-like structures at low Cs coverages (Theta << 1 ML). The formation of these Cs wires leads to characteristic changes in the reflectance anisotropy spectra of the cleaved surface such as a minimum between the E-0 and E-1 bulk critical points of the substrate. For higher coverages the development of a two-dimensional layer can be optically monitored, as can the gradual transition to a three-dimensional disordered layer close to the saturation coverage.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.