Probing GHz gravitational waves with graviton?magnon resonance
Probing GHz gravitational waves with graviton?magnon resonance
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利用引力子磁振子共振探测 GHz 引力波
DOI：
10.1140/epjc/s10052-020-7735-y
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Soda Jiro
中科院分区：
文献类型：
--
作者：
Ito Asuka;Ikeda Tomonori;Miuchi Kentaro;Soda Jiro
提出了一种引力波观测中扩展频率边界的新方法。引力波可以激发一个磁振子。因此，引力波可以通过测量磁振子共振荧光的引力-磁振子探测器来探测。通过使用维数为l的铁磁样品来搜索波长为1的引力波，引力-磁振子探测器的灵敏度达到了光谱密度，分别在14 GHz的\(5.4\times 10^{-22}\times (\frac {l}{\lambda/2\pi})^{-2}\[\mathrm {Hz}^{-1/2}]\)和8.2 GHz的\(8.6\times 10^{-21}\times (\frac {l}{\lambda/2\pi})^{-2}\[\mathrm {Hz}^{-1/2}]\)附近。
A novel method for extending the frequency frontier in gravitational wave observations is proposed. It is shown that gravitational waves can excite a magnon. Thus, gravitational waves can be probed by a graviton–magnon detector which measures resonance fluorescence of magnons. Searching for gravitational waves with a wave lengthby using a ferromagnetic sample with a dimension l, the sensitivity of the graviton–magnon detector reaches spectral densities, around\(5.4\times 10^{-22}\times (\frac {l}{\lambda/2\pi})^{-2}\[\mathrm {Hz}^{-1/2}]\) at 14 GHz and\(8.6\times 10^{-21}\times (\frac {l}{\lambda/2\pi})^{-2}\[\mathrm {Hz}^{-1/2}]\) at 8.2 GHz, respectively.