Magnetic proximity effect in magnetic-insulator/heavy-metal heterostructures across the compensation temperature
Magnetic proximity effect in magnetic-insulator/heavy-metal heterostructures across the compensation temperature
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DOI：
10.1103/physrevb.104.094403
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发表时间：
2021-09
影响因子：
3.7
通讯作者：
J. Bauer;P. Quarterman;A. Grutter;Bharat Khurana;Subhajit Kundu;K. Mkhoyan;J. Borchers;C. Ross
中科院分区：
文献类型：
--
作者：
J. Bauer;P. Quarterman;A. Grutter;Bharat Khurana;Subhajit Kundu;K. Mkhoyan;J. Borchers;C. Ross
非磁性重金属会因为靠近磁性层而产生磁矩。本文研究了在铁磁绝缘体Dy${}_{3}$Fe${}_{5}$O${}_{12}$ （DyIG）上生长的Pt和W的邻近效应符号。极化中子反射表明了清洁金属/石榴石界面的重要性，并表明Pt/DyIG中的接近效应在DyIG补偿温度上下都是正的，这表明与Pt邻近铁磁金属合金的来源不同。
Nonmagnetic heavy metals can develop a magnetic moment due to the proximity of a magnetic layer. Here, the sign of the proximity effect in Pt and W grown on the ferrimagnetic insulator Dy${}_{3}$Fe${}_{5}$O${}_{12}$ (DyIG) is examined. Polarized neutron reflectometry indicates the importance of a clean metal/garnet interface, and shows that the proximity effect in Pt/DyIG is positive above and below the DyIG compensation temperature, indicating a different origin compared to that of Pt adjacent to a ferrimagnetic metal alloy.