The first observation of dynamical chirality by means of polarized neutron scattering in the triangular-lattice antiferromagnet
| العنوان: | The first observation of dynamical chirality by means of polarized neutron scattering in the triangular-lattice antiferromagnet |
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| المؤلفون: | V.P. Plakhty, S. V. Maleyev, D. Visser, J Kulda, J. Wosnitza, O. P. Smirnov, R. K. Kremer |
| المصدر: | Journal of Physics: Condensed Matter. 10:951-960 |
| بيانات النشر: | IOP Publishing, 1998. |
| سنة النشر: | 1998 |
| مصطلحات موضوعية: | Magnetization, Condensed matter physics, Magnetic structure, Spin wave, Scattering, Chemistry, General Materials Science, Neutron scattering, Condensed Matter Physics, Polarization (waves), Small-angle neutron scattering, Excitation |
| الوصف: | The polarization-dependent part of the neutron scattering in the triangular-lattice antiferromagnet is studied. This scattering appears in an external magnetic field and is determined by the projection of a chiral fluctuation on the sample magnetization (the dynamical chirality, DC). It is shown that the DC cross section is an odd function of the energy transfer, , and is proportional to the magnetic field up to 10 kOe above . A Be filter is used instead of the analyser for measuring the DC scattering integrated over . It is shown that below the field dependence of this intensity reveals two features related to the acoustic spin waves and to a new type of low-energy magnetic excitation, presumably of topological nature. The temperature dependence of the acoustic spin waves near is in qualitative agreement with dynamical scaling. |
| تدمد: | 1361-648X 0953-8984 |
| DOI: | 10.1088/0953-8984/10/5/005 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::8fa5fe6c4e6b02e4c1d71b473f124218 https://doi.org/10.1088/0953-8984/10/5/005 |
| رقم الانضمام: | edsair.doi...........8fa5fe6c4e6b02e4c1d71b473f124218 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1361648X 09538984 |
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| DOI: | 10.1088/0953-8984/10/5/005 |