Tuning interactions in reconfigurable kagome artificial spin ices for magnonics

被引：3
|
作者：
Bhat, V. S. [1 ,2 ]
Grundler, D. [1 ,3 ]
机构：
[1] Ecole Polytech Fed Lausanne EPFL, Sch Engn, Inst Mat, Lab Nanoscale Magnet Mat & Magnon, CH-1015 Lausanne, Switzerland
[2] Polish Acad Sci, Inst Phys, Int Res Ctr MagTop, PL-02668 Warsaw, Poland
[3] Ecole Polytech Fed Lausanne, Sch Engn, Inst Elect & Micro Engn, Lab Nanoscale Magnet Mat & Magnon, CH-1015 Lausanne, Switzerland
来源：
APPLIED PHYSICS LETTERS | 2021年 / 119卷 / 09期
关键词：
Iron alloys - Binary alloys;
D O I：
10.1063/5.0064793
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report broadband spin-wave spectroscopy on kagome artificial spin ices (KASIs) made of large arrays of disconnected Ni81Fe19 400-nm-long nanobars. We observed spin wave spectra that varied characteristically upon the separation between neighboring nanobars. The dipolar coupling within the KASI is analyzed in terms of a configuration-dependent bias field. It varies between about 30 and 40 mT for nearest-neighbor separations of 300 and 60 nm, respectively. Similarly to interconnected KASIs, we reprogram the spin wave spectra by means of a specific field protocol. The disconnected KASIs are promising for reprogramable spin wave guiding in underlayers.
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页数：5
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