Magnetic superlattice with two-dimensional periodicity as a waveguide for spin waves

Rakesh P. Tiwari; D. Stroud

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Magnetic superlattice with two-dimensional periodicity as a waveguide for spin waves

机译：具有二维周期性的磁性超晶格作为自旋波的波导

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We describe a simple method of including dissipation in the spin-wave band structure of a periodic ferromagnetic composite, by solving the Landau-Lifshitz equation for the magnetization with the Gilbert damping term. We use this approach to calculate the band structure of square and triangular arrays of Ni nanocylinders embedded in an Fe host. The results show that there are certain bands and special directions in the Brillouin zone where the spin-wave lifetime is increased by more than an order of magnitude above its average value. Thus, it may be possible to generate spin waves in such composites which decay especially slowly, and propagate especially large distances, for certain frequencies and directions in k space.

机译：通过用吉尔伯特阻尼项求解磁化的Landau-Lifshitz方程，我们描述了一种在周期性铁磁复合材料的自旋波带结构中包括耗散的简单方法。我们使用这种方法来计算嵌入在Fe主体中的Ni纳米圆柱体的方形和三角形阵列的能带结构。结果表明，在布里渊区有一定的波段和特殊方向，自旋波寿命比其平均值增加了一个数量级。因此，有可能在这样的复合物中产生自旋波，对于k空间中的某些频率和方向，自旋波衰减特别慢，并且传播特别大的距离。

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来源
《Physical review》 |2010年第22期|P.220403.1-220403.4|共4页
作者
Rakesh P. Tiwari; D. Stroud;
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作者单位

Department of Physics, Ohio State University, Columbus, Ohio 43210, USA;

rnDepartment of Physics, Ohio State University, Columbus, Ohio 43210, USA;

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正文语种 eng
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spin waves; magnetic properties of interfaces (multilayers, superlattices, heterostructures);

机译：自旋波界面的磁性（多层;超晶格;异质结构）;

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专利

1. A 'Waveguide Comb' Magnetic-Field-Controlled Periodic Structure Based on Fe/Cr Superlattices Exhibiting the Giant Magnetoresistive Effect [J] . A. B. Rinkevich, L. N. Romashev, A. M. Burkhanov, Journal of Communications Technology and Electronics . 2006,第3期

机译：基于Fe / Cr超晶格的“波导梳”磁场控制的周期结构，具有巨磁阻效应
2. SPIN WAVES IN QUASI-PERIODIC MAGNETIC SUPERLATTICES [J] . Bezerra CG., Albuquerque EL. Physica, A. Statistical mechanics and its applications . 1997,第3a4期

机译：准周期磁超晶格中的自旋波
3. Spin-polarized transport in one-dimensional waveguide structures with spatially-periodic electronic and magnetic fields [J] . L.G. Wang, Kai Chang Solid State Communications . 2006,第5期

机译：具有空间周期性电子和磁场的一维波导结构中的自旋极化传输
4. Attenuation of electromagnetic waves in semiconductor periodic and quasi-periodic layered waveguides in a magnetic field [C] . Shramkova O. V. 12th International Conference on Transparent Optical Networks . 2010

机译：磁场中半导体周期和准周期分层波导中电磁波的衰减
5. Electromagnetic scattering from a periodic array of open-ended rectangular waveguide apertures. [D] . Bohning, Terry. 1992

机译：来自开放式矩形波导孔的周期性阵列的电磁散射。
6. Hyperbolic-cosine waveguide tapers and oversize rectangular waveguide for reduced broadband insertion loss in W-band electron paramagnetic resonance spectroscopy. II. Broadband characterization [O] . Jason W. Sidabras, Robert A. Strangeway, Richard R. Mett, -1

机译：双曲余弦波导锥度和超大矩形波导可减少W波段电子顺磁共振波谱中的宽带插入损耗。二。宽带表征
7. Magnonic Crystal with Two-Dimensional Periodicity as a Waveguide for Spin Waves [O] . Tiwari, Rakesh P., Stroud, D. 2010

机译：具有二维周期性的水晶晶体作为波导自旋波
8. Brillouin Scattering from Collective Spin Waves in Magnetic Superlattices [R] . Hillebrands, B. , Boufelfel, A. , Falco, C. M. , 1987

机译：磁超晶格中集合自旋波的布里渊散射

Magnetic superlattice with two-dimensional periodicity as a waveguide for spin waves

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