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arXiv 2004.07763cond-mat.mes-hallcond-mat.mtrl-scicond-mat.str-elcond-mat.supr-conphysics.app-ph
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磁振子散射平台

A Magnon Scattering Platform

Tony X. Zhou, Joris J. Carmiggelt, Lisa M. Gächter, Ilya Esterlis, Dries Sels, Rainer J. Stöhr, Chunhui Du, Daniel Fernandez, Joaquin F. Rodriguez-Nieva, Felix … 展开作者

Tony X. Zhou, Joris J. Carmiggelt, Lisa M. Gächter, Ilya Esterlis, Dries Sels, Rainer J. Stöhr, Chunhui Du, Daniel Fernandez, Joaquin F. Rodriguez-Nieva, Felix Büttner, Eugene Demler, Amir Yacoby

摘要:

散射实验彻底改变了我们对自然的理解。例子包括细胞核的发现,晶体学和DNA双螺旋结构的发现。散射技术因所使用的粒子类型、这些粒子与目标材料的相互作用以及所使用的波长范围而不同。在这里,我们展示了一个新的2维桌面散射平台,用于探索介观长度尺度上的材料的磁性。在YIG薄膜中产生长寿命的相干磁振子激发,并从沉积在其表面上的磁性靶散射。然后使用扫描NV中心磁力计记录散射波,该磁力计允许在从低温到周围环境的条件下进行亚波长成像和操作。虽然大多数散射平台仅测量散射波的强度,但我们的成像方法允许对散射波的振幅和相位进行空间确定,从而允许对目标散射电位进行系统重建。我们的实验结果是一致的,这样的几何形状的理论预测,并揭示了几个不寻常的功能的磁响应的目标,包括抑制附近的目标边缘和梯度的方向垂直于表面波传播的方向。我们的研究结果建立磁振子散射实验作为一个新的平台,研究相关的多体系统。

英文摘要:

Scattering experiments have revolutionized our understanding of nature. Examples include the discovery of the nucleus, crystallography, and the discovery of the double helix structure of DNA. Scattering techniques differ by the type of the particles used, the interaction these particles have with target materials and the range of wavelengths used. Here, we demonstrate a new 2-dimensional table-top scattering platform for exploring magnetic properties of materials on mesoscopic length scales. Long lived, coherent magnonic excitations are generated in a thin film of YIG and scattered off a magnetic target deposited on its surface. The scattered waves are then recorded using a scanning NV center magnetometer that allows sub-wavelength imaging and operation under conditions ranging from cryogenic to ambient environment. While most scattering platforms measure only the intensity of the scattered waves, our imaging method allows for spatial determination of both amplitude and phase of the scattered waves thereby allowing for a systematic reconstruction of the target scattering potential. Our experimental results are consistent with theoretical predictions for such a geometry and reveal several unusual features of the magnetic response of the target, including suppression near the target edges and gradient in the direction perpendicular to the direction of surface wave propagation. Our results establish magnon scattering experiments as a new platform for studying correlated many-body systems.

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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