Modulated photocurrent measurements were performed on amorphous boron, -rhombohedral boron, and Al-Pd-Re quasicrystal. For the quasicrystal, this is the first report on photoconductivity. The data obtained for amorphous boron are analyzed by a typical model which assumes interband photocarrier gener
On the dynamical conductivity in icosahedral boron-rich solids
β Scribed by Schmechel, R; Werheit, H
- Book ID
- 127340439
- Publisher
- Institute of Physics
- Year
- 1996
- Tongue
- English
- Weight
- 198 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0953-8984
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π SIMILAR VOLUMES
Optical conductivities and dielectric functions derived from the IR-optical reflectivity spectra exhibit clear similarities between icosahedral boron-rich structures and Al-based isosahedral quasicyrstals. This suggests a close qualitative relationship of their electronic structures. Accordingly ico
For -rhombohedral boron and boron carbide, the hitherto best-investigated icoasahedral boron-rich solids, the concentrations of structural defects and electronic gap states are quantitatively correlated. In this way the theoretically determined valence electron de5ciencies are exactly compensated, a
The distinct feature of the chemical bonding of boron solids is three-center or icosahedral bonding. The consequences of this peculiar bonding on the lattice dynamics are discussed in terms of the central and noncentral forces, while the recent development in this field is reviewed. The character of