Calculation of Gilbert damping in ferromagnetic films
The Gilbert damping constant in the phenomenological Landau-Lifshitz-Gilbert equation which describes the dynamics of magnetization, is calculated for Fe, Co and Ni bulk ferromagnets, Co films and Co/Pd bilayers within a nine-band tight-binding model with spin-orbit coupling included. The calculation...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2013-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20134018003 |
| _version_ | 1823937412809621504 |
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| author | Edwards D. M. Cinal M. Barati E. Umerski A. |
| author_facet | Edwards D. M. Cinal M. Barati E. Umerski A. |
| author_sort | Edwards D. M. |
| collection | DOAJ |
| description | The Gilbert damping constant in the phenomenological Landau-Lifshitz-Gilbert equation which describes the dynamics of magnetization, is calculated for Fe, Co and Ni bulk ferromagnets, Co films and Co/Pd bilayers within a nine-band tight-binding model with spin-orbit coupling included. The calculational effciency is remarkably improved by introducing finite temperature into the electronic occupation factors and subsequent summation over the Matsubara frequencies. The calculated dependence of Gilbert damping constant on scattering rate for bulk Fe, Co and Ni is in good agreement with the results of previous ab initio calculations. Calculations are reported for ferromagnetic Co metallic films and Co/Pd bilayers. The dependence of the Gilbert damping constant on Co film thickness, for various scattering rates, is studied and compared with recent experiments. |
| first_indexed | 2024-12-17T02:01:15Z |
| format | Article |
| id | doaj.art-0b0e27cc06ee48ddb43d2052ab4d5c36 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-17T02:01:15Z |
| publishDate | 2013-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-0b0e27cc06ee48ddb43d2052ab4d5c362022-12-21T22:07:49ZengEDP SciencesEPJ Web of Conferences2100-014X2013-01-01401800310.1051/epjconf/20134018003Calculation of Gilbert damping in ferromagnetic filmsEdwards D. M.Cinal M.Barati E.Umerski A.The Gilbert damping constant in the phenomenological Landau-Lifshitz-Gilbert equation which describes the dynamics of magnetization, is calculated for Fe, Co and Ni bulk ferromagnets, Co films and Co/Pd bilayers within a nine-band tight-binding model with spin-orbit coupling included. The calculational effciency is remarkably improved by introducing finite temperature into the electronic occupation factors and subsequent summation over the Matsubara frequencies. The calculated dependence of Gilbert damping constant on scattering rate for bulk Fe, Co and Ni is in good agreement with the results of previous ab initio calculations. Calculations are reported for ferromagnetic Co metallic films and Co/Pd bilayers. The dependence of the Gilbert damping constant on Co film thickness, for various scattering rates, is studied and compared with recent experiments.http://dx.doi.org/10.1051/epjconf/20134018003 |
| spellingShingle | Edwards D. M. Cinal M. Barati E. Umerski A. Calculation of Gilbert damping in ferromagnetic films EPJ Web of Conferences |
| title | Calculation of Gilbert damping in ferromagnetic films |
| title_full | Calculation of Gilbert damping in ferromagnetic films |
| title_fullStr | Calculation of Gilbert damping in ferromagnetic films |
| title_full_unstemmed | Calculation of Gilbert damping in ferromagnetic films |
| title_short | Calculation of Gilbert damping in ferromagnetic films |
| title_sort | calculation of gilbert damping in ferromagnetic films |
| url | http://dx.doi.org/10.1051/epjconf/20134018003 |
| work_keys_str_mv | AT edwardsdm calculationofgilbertdampinginferromagneticfilms AT cinalm calculationofgilbertdampinginferromagneticfilms AT baratie calculationofgilbertdampinginferromagneticfilms AT umerskia calculationofgilbertdampinginferromagneticfilms |