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arXiv 2102.11713cond-mat.mes-hallcond-mat.mtrl-sci
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耦合自旋-腔系统的可调协同效应

Tunable Cooperativity in Coupled Spin--Cavity Systems

Lukas Liensberger, Franz X. Haslbeck, Andreas Bauer, Helmuth Berger, Rudolf Gross, Hans Huebl, Christian Pfleiderer, Mathias Weiler

摘要:

通过外加控制参量改变自旋系统的磁态,实验研究了耦合自旋-腔系统中协同效应的可调谐性。作为模型系统,我们使用Skyrmion主体材料Cu $_2$ OSeO $_3$耦合到微波谐振腔。在不同的磁相,我们测量的谐振器和磁振子模式之间的色散耦合和模型,我们的结果,通过使用输入-输出形式主义。我们的研究结果表明,通过磁场的归一化耦合率的一个很强的可调谐性,使我们能够改变磁振子-光子的合作从1到60的skyrmion晶格态的相边界。

英文摘要:

We experimentally study the tunability of the cooperativity in coupled spin--cavity systems by changing the magnetic state of the spin system via an external control parameter. As model system, we use the skyrmion host material Cu$_2$OSeO$_3$ coupled to a microwave cavity resonator. In the different magnetic phases we measure a dispersive coupling between the resonator and the magnon modes and model our results by using the input--output formalism. Our results show a strong tunability of the normalized coupling rate by magnetic field, allowing us to change the magnon--photon cooperativity from 1 to 60 at the phase boundaries of the skyrmion lattice state.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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