One-magnon and exciton inelastic light scattering in the antiferromagnet CoF₂
Experimental data are reported for the temperature and polarization dependence of the one-magnon Raman light scattering in the rutile-structure antiferromagnet CoF₂ (Néel temperature TN = 38 K). The low-lying excitons are also investigated at low temperatures and comparisons made with results from e...
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| Veröffentlicht in: | Физика низких температур |
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| Datum: | 2014 |
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| Format: | Artikel |
| Sprache: | Englisch |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2014
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| Zitieren: | One-magnon and exciton inelastic light scattering in the antiferromagnet CoF₂ / E. Meloche, M.G. Cottam, D.J. Lockwood // Физика низких температур. — 2014. — Т. 40, № 2. — С. 173-186. — Бібліогр.: 21 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862564427918737408 |
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| author | Meloche, E. Cottam, M.G. Lockwood, D.J. |
| author_facet | Meloche, E. Cottam, M.G. Lockwood, D.J. |
| citation_txt | One-magnon and exciton inelastic light scattering in the antiferromagnet CoF₂ / E. Meloche, M.G. Cottam, D.J. Lockwood // Физика низких температур. — 2014. — Т. 40, № 2. — С. 173-186. — Бібліогр.: 21 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | Experimental data are reported for the temperature and polarization dependence of the one-magnon Raman light scattering in the rutile-structure antiferromagnet CoF₂ (Néel temperature TN = 38 K). The low-lying excitons are also investigated at low temperatures and comparisons made with results from earlier Raman, infrared, and neutron scattering work. A detailed analysis of the one-magnon Stokes and anti-Stokes Raman spectra is
presented resulting in comprehensive data for the temperature variation up to TN of the one-magnon frequency, line width, and integrated intensity. A theory of the one-magnon scattering and other magnetic transitions is constructed based mainly on a spin S = 3/2 exchange model, extending a simpler effective S = 1/2 approach. The excitation energies and spectral intensities over a broad range of temperatures are obtained using a Green's function equation of motion method that allows for a careful treatment of the single-ion anisotropy. Overall the S = 3/2 theory compares well with the experimental data.
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| first_indexed | 2025-11-25T23:52:47Z |
| format | Article |
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| id | nasplib_isofts_kiev_ua-123456789-119410 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-11-25T23:52:47Z |
| publishDate | 2014 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Meloche, E. Cottam, M.G. Lockwood, D.J. 2017-06-06T18:45:53Z 2017-06-06T18:45:53Z 2014 One-magnon and exciton inelastic light scattering in the antiferromagnet CoF₂ / E. Meloche, M.G. Cottam, D.J. Lockwood // Физика низких температур. — 2014. — Т. 40, № 2. — С. 173-186. — Бібліогр.: 21 назв. — англ. 0132-6414 PACS 75.30.Ds, 72.10.Вb, 78.30.–j, 75.50.Ee https://nasplib.isofts.kiev.ua/handle/123456789/119410 Experimental data are reported for the temperature and polarization dependence of the one-magnon Raman light scattering in the rutile-structure antiferromagnet CoF₂ (Néel temperature TN = 38 K). The low-lying excitons are also investigated at low temperatures and comparisons made with results from earlier Raman, infrared, and neutron scattering work. A detailed analysis of the one-magnon Stokes and anti-Stokes Raman spectra is
 presented resulting in comprehensive data for the temperature variation up to TN of the one-magnon frequency, line width, and integrated intensity. A theory of the one-magnon scattering and other magnetic transitions is constructed based mainly on a spin S = 3/2 exchange model, extending a simpler effective S = 1/2 approach. The excitation energies and spectral intensities over a broad range of temperatures are obtained using a Green's function equation of motion method that allows for a careful treatment of the single-ion anisotropy. Overall the S = 3/2 theory compares well with the experimental data. This work was partially supported by the Natural Sciences and Engineering Research Council (NSERC) of Canada. We thank P.A. Moch for helpful discussions, J. Johnson for assistance in the analysis of the Raman spectra, and H.J. Labbé for the crystal sample preparation. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур К восьмидесятилетию антиферромагнетизма ІІ. Эксперимент One-magnon and exciton inelastic light scattering in the antiferromagnet CoF₂ Article published earlier |
| spellingShingle | One-magnon and exciton inelastic light scattering in the antiferromagnet CoF₂ Meloche, E. Cottam, M.G. Lockwood, D.J. К восьмидесятилетию антиферромагнетизма ІІ. Эксперимент |
| title | One-magnon and exciton inelastic light scattering in the antiferromagnet CoF₂ |
| title_full | One-magnon and exciton inelastic light scattering in the antiferromagnet CoF₂ |
| title_fullStr | One-magnon and exciton inelastic light scattering in the antiferromagnet CoF₂ |
| title_full_unstemmed | One-magnon and exciton inelastic light scattering in the antiferromagnet CoF₂ |
| title_short | One-magnon and exciton inelastic light scattering in the antiferromagnet CoF₂ |
| title_sort | one-magnon and exciton inelastic light scattering in the antiferromagnet cof₂ |
| topic | К восьмидесятилетию антиферромагнетизма ІІ. Эксперимент |
| topic_facet | К восьмидесятилетию антиферромагнетизма ІІ. Эксперимент |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/119410 |
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