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Inelastic polarised neutron scattering in the triangular-lattice antiferromagnet CsMnBr3: An experimental proof of the chiral universality
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UNSPECIFIED (1999) Inelastic polarised neutron scattering in the triangular-lattice antiferromagnet CsMnBr3: An experimental proof of the chiral universality. EUROPHYSICS LETTERS, 48 (2). pp. 215-220. ISSN 0295-5075.
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Abstract
The temperature behaviour of the polarisation-dependent part of the differential cross-section of inelastic neutron scattering is investigated for the triangular-lattice antiferromagnet CsMnBr3 in the critical region above T-N with the external magnetic field H = 4 T, applied along the hexagonal axis c, or the scattering vector Q(1/3 1/3 1). In the range of reduced temperature tau > 0.1 restricted by the resolution, this part of the cross-section, which is determined by the projection of a chiral fluctuation on the field-induced magnetisation, follows a power law of reduced temperature with the critical chiral crossover exponent phi(C) = 1.29(7). This is the first chiral critical exponent determined experimentally, which gives a direct proof of the chiral universality.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Journal or Publication Title: | EUROPHYSICS LETTERS | ||||
| Publisher: | E D P SCIENCES | ||||
| ISSN: | 0295-5075 | ||||
| Official Date: | October 1999 | ||||
| Dates: |
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| Volume: | 48 | ||||
| Number: | 2 | ||||
| Number of Pages: | 6 | ||||
| Page Range: | pp. 215-220 | ||||
| Publication Status: | Published |
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