Title of article
Isotope effects in CuGeO3 studied by Raman spectroscopy
Author/Authors
Loa، نويسنده , , I and Gronemeyer، نويسنده , , S and Thomsen، نويسنده , , C and Kremer، نويسنده , , R.K، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2001
Pages
5
From page
279
To page
283
Abstract
Effects of isotopic substitution of Cu and Ge in CuGeO3 are studied by Raman spectroscopy. We present detailed information on the isotope-induced shifts of nearly all Raman modes in the dimerized phase of CuGeO3. Our study unambiguously reveals phononic contributions to the asymmetric Raman peaks observed at 108 and 228 cm−1 which have been related to magnetic excitations previously. Furthermore, we observed an upshift by 0.9±0.1 cm−1 for the two-magnon bound state at 30 cm−1 in 65CuGeO3 compared to natCuGeO3.
Keywords
A. CuGeO3 , D. Spin-Peierls transition , D. Isotope effects , E. Raman spectroscopy
Journal title
Solid State Communications
Serial Year
2001
Journal title
Solid State Communications
Record number
1786419
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