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Quasi-one-dimensional spin chains in CuSiO3: an EPR study |
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| Authors: | J. Sichelschmidt M. Baenitz C. Geibel F. Steglich A. Loidl H. H. Otto |
| Affiliation: | 1. Max-Planck-Institut für Chemische Physik fester Stoffe, N?thnitzerstrasse 40, 01187, Dresden, Germany 2. Experimentalphysik V, Universit?t Augsburg, Augsburg, Germany 3. Institut für Mineralogie und Mineralische Rohstoffe, Technische Universit?t-Clausthal, Clausthal-Zellerfeld, Germany |
| Abstract: | Temperature-dependent electron paramagnetic resonance (EPR) studies were performed on CuSiO3. This recently discovered compound is isostructural with the spin-Peierls compound CuGeO3. The EPR signals show characteristics different from those of CuGeO3 and are due to Cu2+ spins located along quasi one-dimensional chains. ForT>8.2 K the spin susceptibility closely follows the predictions of anS=1/2 one-dimensional Heisenberg antiferromagnet withJ/k B=21 K. BelowT=8.2 K the spin susceptibility immediately drops to zero indicating long-range magnetic order. |
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