SPIN-PEIERLS TRANSITION IN CUGEO3 - ELECTRON-PARAMAGNETIC-RESONANCE STUDY

Authors
OSEROFF S CHEONG SW FONDADO A AKTAS B FISK Z
Citation
S. Oseroff et al., SPIN-PEIERLS TRANSITION IN CUGEO3 - ELECTRON-PARAMAGNETIC-RESONANCE STUDY, Journal of applied physics, 75(10), 1994, pp. 6819-6821
Citations number
18
Categorie Soggetti
Physics, Applied
Journal title
Journal of applied physics → ACNP
ISSN journal
00218979
Volume
75
Issue
10
Year of publication
1994
Part
2B
Pages
6819 - 6821
Database
ISI
SICI code
0021-8979(1994)75:10<6819:STIC-E>2.0.ZU;2-4
Abstract
Measurements of electron paramagnetic resonance (EPR) at 9 and 35 GHz between 2 and 300 K in single crystals and powder samples of CuGeO3 ar e presented. Below 14 K a large decrease in the intensity of the Cu2EPR signal is observed. The data can be interpreted as due to a spin-P eierls transition. However, an alternative interpretation in terms of a simple structural transition cannot be ruled out. An opening of an e nergy gap of approximately 25 K is calculated from the analysis.