Charge Order inStudied by EPR
- 21 August 2000
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 85 (8) , 1742-1745
- https://doi.org/10.1103/physrevlett.85.1742
Abstract
We present angular dependent EPR measurements in at -band frequencies in the temperature range K. A detailed analysis in terms of the antisymmetric Dzyaloshinski-Moriya and the anisotropic exchange interactions yields the following scheme of charge order: On decreasing temperature a quarter-filled ladder with strong charge disproportions, existing for K, is followed by zigzag charge-order fluctuations which become long range and static below K.
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