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Neutron inelastic scattering investigation of the magnetic excitations in Cu2Te2O5X2 (X=Br,Cl)
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UNSPECIFIED (2005) Neutron inelastic scattering investigation of the magnetic excitations in Cu2Te2O5X2 (X=Br,Cl). PHYSICAL REVIEW B, 71 (22). -. doi:10.1103/PhysRevB.71.224430 ISSN 1098-0121.
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Official URL: http://dx.doi.org/10.1103/PhysRevB.71.224430
Abstract
Neutron inelastic scattering investigations have been performed on the spin tetrahedral system Cu2Te2O5X2 (X=Cl, Br). We report the observation of magnetic excitations with a dispersive component in both compounds, associated with the three-dimensional incommensurate magnetic order that develops below T-N(Cl)=18.2 K and T-N(Br)=11.4 K. The excitation in Cu2Te2O5Cl2 softens as the temperature approaches T-N(Cl), leaving diffuse quasi-elastic scattering above the transition temperature. In the bromide, the excitations are present well above T-N(Br), which might be attributed to the presence of a degree of low dimensional correlations above T-N(Br) in this compound.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Journal or Publication Title: | PHYSICAL REVIEW B | ||||
| Publisher: | AMERICAN PHYSICAL SOC | ||||
| ISSN: | 1098-0121 | ||||
| Official Date: | June 2005 | ||||
| Dates: |
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| Volume: | 71 | ||||
| Number: | 22 | ||||
| Number of Pages: | 6 | ||||
| Page Range: | - | ||||
| DOI: | 10.1103/PhysRevB.71.224430 | ||||
| Publication Status: | Published |
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