Abstract
Published in: Phys. Rev. B 61 (2000) 12063
Citing articles (CrossRef)
citations recorded in [Science Citation Index]
Abstract: We investigated in detail the optical properties of several Cu(1-delta)Mg(delta)GeO3 (with delta=0,0.01), and CuGe(1-x)B(x)O3 with B=Si (x=0,0.007,0.05,0.1), and Al (x=0,0.01) single crystals, in the frequency range 20-32000 cm^-1. We report temperature dependent reflectivity and transmission measurements, performed with polarized light in order to probe the anisotropy of the crystals along the b and c axes, and optical conductivity spectra obtained by Kramers-Kronig transformation or direct inversion of the Fresnel formula. Special emphasis is given to the far-infrared phonon spectra. The temperature dependence of the phonon parameters is presented and discussed in relation to the soft mode issue in CuGeO3. For T
Original language | English |
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Number of pages | 18 |
Journal | Physical Review B |
Volume | 61 |
Issue number | 18 |
Publication status | Published - 2000 |