Inelastic polarised neutron scattering in the triangular-lattice antiferromagnet CsMnBr 3 : An experimental proof of the chiral universality
| العنوان: | Inelastic polarised neutron scattering in the triangular-lattice antiferromagnet CsMnBr 3 : An experimental proof of the chiral universality |
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| المؤلفون: | V.P. Plakhty, E. V. Moskvin, J. Kulda, J. Wosnitza, S. V. Maleyev, D. Visser |
| المصدر: | Europhysics Letters (EPL). 48:215-220 |
| بيانات النشر: | IOP Publishing, 1999. |
| سنة النشر: | 1999 |
| مصطلحات موضوعية: | Physics, Condensed matter physics, Scattering, Quasielastic neutron scattering, General Physics and Astronomy, Hexagonal lattice, Neutron scattering, Inelastic scattering, Small-angle neutron scattering, Critical exponent, Inelastic neutron scattering |
| الوصف: | 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 TN 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 τ > 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 C = 1.29(7). This is the first chiral critical exponent determined experimentally, which gives a direct proof of the chiral universality. |
| تدمد: | 1286-4854 0295-5075 |
| DOI: | 10.1209/epl/i1999-00468-4 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::232c99bcf68a78ab028bc01d70f0a187 https://doi.org/10.1209/epl/i1999-00468-4 |
| رقم الانضمام: | edsair.doi...........232c99bcf68a78ab028bc01d70f0a187 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 12864854 02955075 |
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| DOI: | 10.1209/epl/i1999-00468-4 |