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arXiv 2103.08168physics.atom-phphysics.optics
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原子蒸气中的非线性磁电效应

Nonlinear magnetoelectric effect in atomic vapor

Sushree S. Sahoo, Soumya R. Mishra, G. Rajalakshmi, Ashok K. Mohapatra

摘要:

磁电(ME)效应是指介质中电场和磁场之间的耦合,导致由磁场引起的电极化的强度和由电场引起的磁化。由于在自旋电子学器件、存储器和磁传感器的制造中的应用,某些磁电材料如多铁性材料中的线性ME效应一直是人们极大的兴趣。然而,目前对非线性电磁效应的研究主要集中在手性材料中二次谐波的研究上。本文报道了热原子蒸气中电场和射频磁场的非线性波现象,这是介质中高阶非线性ME效应的结果。通过与系统的密度矩阵计算结果的比较,解释了实验结果。我们还通过实验验证了预期的依赖性的产生的场的幅度上的RF场的大小作为磁电效应的证据。这项研究可以打开的可能性,由于其在较大的动态范围和任意频率分辨率方面的优势,精密射频磁力测量。

英文摘要:

Magnetoelectric (ME) effect refers to the coupling between electric and magnetic fields in a medium resulting in electric polarization induced by magnetic fields and magnetization induced by electric fields. The linear ME effect in certain magnetoelectric materials such as multiferroics has been of great interest due to its application in the fabrication of spintronics devices, memories, and magnetic sensors. However, the exclusive studies on the nonlinear ME effect are mostly centered on the investigation of second-harmonic generation in chiral materials. Here, we report the demonstration of nonlinear wave mixing of optical electric fields and radio-frequency (rf) magnetic fields in thermal atomic vapor, which is the consequence of the higher-order nonlinear ME effect in the medium. The experimental results are explained by comparing with density matrix calculations of the system. We also experimentally verify the expected dependence of the generated field amplitudes on the rf field magnitude as evidence of the magnetoelectric effect. This study can open up the possibility for precision rf-magnetometry due to its advantage in terms of larger dynamic range and arbitrary frequency resolution.

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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