Field-controlled phase separation at the impurity-induced magnetic ordering in the spin-Peierls magnet CuGeO3

Details Field-controlled phase separation at the impurity-induced magnetic ordering in the spin-Peierls magnet CuGeO3 Field-controlled phase separation at the impurity-induced magnetic ordering in the spin-Peierls magnet CuGeO3

2004-04-29

arxiv.org/abs/cond-mat/0404715v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages 4 figures

Scientific paper

10.1103/PhysRevLett.94.057205

The fraction of the paramagnetic phase surviving at the impurity-induced
antiferromagnetic order transition of the doped spin-Peierls magnet
Cu(1-x)Mg(x)GeO3 (x < 5%) is found to increase with an external magnetic field.
This effect is qualitatively explained by the competition of Zeeman energy and
exchange interaction between local antiferromagnetic clusters

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