Quasi-one-dimensional spin chains in CuSiO3: an EPR study

2); (2) Max Planck Institut fuer Chemische Physik fester Stoffe; (3) TU-Clausthal; A. Loidl (1); C. Geibel (2); Clausthal-Zellerfeld; Dresden; F. Steglich (2) ((1) Experimentalphysik V; Germany; Germany)

arxiv: cond-mat/0005346 · v1 · submitted 2000-05-22 · ❄️ cond-mat.str-el

Quasi-one-dimensional spin chains in CuSiO3: an EPR study

J. Sichelschmidt (1 , 2) , A. Loidl (1) , M. Baenitz (2) , H. H. Otto (3) , C. Geibel (2) , F. Steglich (2) ((1) Experimentalphysik V , Universitaet Augsburg

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Germany (2) Max Planck Institut fuer Chemische Physik fester Stoffe Dresden (3) TU-Clausthal Institut fuer Mineralogie und Mineralische Rohstoffe Clausthal-Zellerfeld Germany)

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keywords spinchainscompoundcugeo3cusio3one-dimensionalsusceptibilityalong

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Temperature dependent EPR studies were performed on a single crystal of CuSiO3.This recently discovered compound is isostructural with the spin-Peierls compound CuGeO3. The EPR signals show different characteristics than those of CuGeO3 and aredue to Cu2+ spins located along quasi one-dimensional chains. For T > 8.2K the spin susceptibility closely follows the predictions of a S=1/2 one-dimensional Heisenberg antiferromagnet with J/kB = 21K. Below T = 8.2K the spin susceptibility immediately drops to zero indicating long range magnetic order.

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Quasi-one-dimensional spin chains in CuSiO3: an EPR study

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