Observation of the dispersion relations for quantized coherent spin waves excited by a microwave antenna

Yoichi Shiota; Ryusuke Hisatomi; Takahiro Moriyama; Teruo Ono

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Observation of the dispersion relations for quantized coherent spin waves excited by a microwave antenna

机译：微波天线激发量化相干旋转波的分散关系观察

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The propagation of coherent spin waves in permalloy microstrips was investigated using a heterodyne-magneto-optical Kerr effect technique. The two-dimensional imaging reveals the mode interference with a high-order spin-wave mode along the microstrip width. The spin-wave dispersion relations across the microstrip width were deduced from fast Fourier transformations on the complex spin-wave amplitude of the one-dimensional scan, and multiple spin-wave modes were observed at the edges of the microstrips. These experimental results provide direct evidence for the quantization of spin-wave dispersion due to the finite width of the microstrips and enables us to evaluate the attenuation length for each quantized spin-wave mode.

机译：使用外差 - 磁光克尔效应技术研究了渗透组微轨中相干旋转波的传播。二维成像沿着微带宽度揭示了与高阶旋转波模式的模式干扰。从一维扫描的复杂自旋波幅度的快速傅里叶变换推导出微带宽度的自旋波分散关系，并且在微轨的边缘处观察到多种旋转波模式。这些实验结果提供了由于微轨的有限宽度而定量旋转波分散的直接证据，并且使我们能够评估每个量化的旋转波模式的衰减长度。

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《Physical review.B.Condensed matter and materials physics》 |2020年第21期|214440.1-214440.6|共6页
作者
Yoichi Shiota; Ryusuke Hisatomi; Takahiro Moriyama; Teruo Ono;
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Institute for Chemical Research Kyoto University Uji Kyoto 611-0011 Japan;

Institute for Chemical Research Kyoto University Uji Kyoto 611-0011 Japan;

Institute for Chemical Research Kyoto University Uji Kyoto 611-0011 Japan;

Institute for Chemical Research Kyoto University Uji Kyoto 611-0011 Japan Center for Spintronics Research Network Osaka University Toyonaka Osaka 560-8531 Japan;

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1. Observation of the coherent state in a system of nuclear spin-wave pairs excited by microwave noise pumping [J] . Andrienko AV. JETP Letters . 2002,第2期

机译：微波噪声泵激激发的核自旋波对系统相干态的观测
2. Emission of coherent spin waves from a magnetic layer excited by a uniform microwave magnetic field [J] . Poimanov V. D., Kuchko A. N., Kruglyak V. V. Journal of Physics, D. Applied Physics: A Europhysics Journal . 2019,第13期

机译：来自由均匀微波磁场激发的磁性层的相干旋转波的发射
3. Large-amplitude coherent spin waves excited by spin-polarized current in nanoscale spin valves [J] . I. N. Krivorotov, D. V. Berkov, N. L. Gorn, Physical review . 2007,第2期

机译：纳米自旋阀中自旋极化电流激发的大振幅相干自旋波
4. Generation of Terahertz, Microwave, Radio Waves from a Laser-excited Wire Antenna [C] . Kuan-Yan Huang, Chia-Hsiang Chen, Ming-Hsiung Wu, Progress in electromagnetics research symposium . 2013

机译：激光激发线天线产生太赫兹，微波，无线电波
5. Antenna-coupled Superconducting Bolometers for Observations of the Cosmic Microwave Background Polarization. [D] . Myers, Michael James. 2010

机译：天线耦合的超导波速计，用于观测宇宙微波背景极化。
6. Direct observation of Kelvin waves excited by quantized vortex reconnection [O] . Enrico Fonda, David P. Meichle, Nicholas T. Ouellette, 2014

机译：直接观察量化涡旋重连激发的开尔文波
7. Emission of coherent spin waves from a magnetic layer excited by a uniform microwave magnetic field [O] . V D Poimanov, A N Kuchko, V V Kruglyak 2019

机译：来自由均匀微波磁场激发的磁性层的相干旋转波的发射
8. Observation of Lower Hybrid Waves by Coherent Scattering of Microwaves in Wega [R] . Ichtchenko, G., O'Connor, W. P., Moresco, M., 1983

机译：Wega微波相干散射观测低杂波

Observation of the dispersion relations for quantized coherent spin waves excited by a microwave antenna

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