Transverse acoustic phonon excitation of two-dimensional Heisenberg ferromagnetic system
文献类型：期刊论文
| 作者 | Cheng TaiMin1; Ze Xianyu1 |
| 刊名 | ACTA PHYSICA SINICA
 |
| 出版日期 | 2006 |
| 卷号 | 55期号:9页码:4828-4836 |
| 关键词 | DENSITY-OF-STATES INVAR ALLOY LATTICE-DYNAMICS MAGNON FE86CO4ZR10 MAGNETISM MECHANISM FE3PT magnon-phonon interaction transverse acoustic phonon softening Matsubara Green function theory ferromagnetic system |
| ISSN号 | 1000-3290 |
| 其他题名 | Transverse acoustic phonon excitation of two-dimensional Heisenberg ferromagnetic system |
| 英文摘要 | A magnon-phonon inter-action model is developed on the basis of two-dimensional square Heisenberg ferromagnetic system. The transverse acoustic phonon excitation is studied through Matsubara Green function theory, and the transverse acoustic phonon dispersion curve is calculated at the main symmetric point and on the symmetric line in the first Brillouin zone. It's found that on the line Sigma in first Brillouin zone, there is hardening for the transverse acoustic phonon in the smaller wave vector zone (point Gamma near k(x)a < 0.2), but there is softening for the transverse acoustic phonon in the softening zone (0.25 < k(x)a < 0.7), there is hardening for the transverse acoustic phonon at point M near (0.75 < k(x)a). On the line Delta, there is no phonon softening and hardening for transverse acoustic phonon. On the line Z, there is softening for transverse acoustic phonon in smaller wave vector zone (point X near k(x)a < 0.65), but there is hardening for the transverse acoustic phonon at the point M nearby. The influences of different parameters on the transverse acoustic phonon excitation are also illustrated. It's found that the coupling of the magnon-phonon coupling and the spin wave stiffness are the main factors affecting the transverse acoustic phonon softening. |
| 语种 | 英语 |
| CSCD记录号 | CSCD:2442931 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/158255]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 作者单位 | 1.中国科学院金属研究所 2.NE University |
| 推荐引用方式 GB/T 7714 | Cheng TaiMin,Ze Xianyu. Transverse acoustic phonon excitation of two-dimensional Heisenberg ferromagnetic system[J]. ACTA PHYSICA SINICA,2006,55(9):4828-4836. |
| APA | Cheng TaiMin,&Ze Xianyu.(2006).Transverse acoustic phonon excitation of two-dimensional Heisenberg ferromagnetic system.ACTA PHYSICA SINICA,55(9),4828-4836. |
| MLA | Cheng TaiMin,et al."Transverse acoustic phonon excitation of two-dimensional Heisenberg ferromagnetic system".ACTA PHYSICA SINICA 55.9(2006):4828-4836. |
入库方式： OAI收割
来源：金属研究所
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