تقرير
Magnon spin transport around the compensation magnetic field in easy-plane antiferromagnetic insulators
| العنوان: | Magnon spin transport around the compensation magnetic field in easy-plane antiferromagnetic insulators |
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| المؤلفون: | Shen, Ka |
| سنة النشر: | 2021 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics |
| الوصف: | In this work, we theoretically study the magnon spin transport in easy-plane antiferromagnetic insulators in the presence of an in-plane magnetic field. By exactly calculating the magnon spectrum, we find the band splitting due to the magnetic anisotropy can be fully compensated by the external field at a particular strength, which makes its dynamics nearly equivalent to an easy-axis antiferromagnet. As a result, the intrinsic magnon spin Hall effect due to the dipole-dipole interaction, previously predicted in easy-axis antiferromagnets is activated in easy-plane antiferromagnets. The compensation feature also allows the field control of magnon spin lifetime and hence the spin diffusion length. The compensation feature is robust against the biaxial anisotropy. Comment: 8 pages, 3 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1063/5.0054409 |
| URL الوصول: | http://arxiv.org/abs/2106.02178 |
| رقم الأكسشن: | edsarx.2106.02178 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1063/5.0054409 |
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