تقرير
Butterfly-shaped magnetoresistance in triangular-lattice antiferromagnet Ag$_2$CrO$_2$
| العنوان: | Butterfly-shaped magnetoresistance in triangular-lattice antiferromagnet Ag$_2$CrO$_2$ |
|---|---|
| المؤلفون: | Taniguchi, Hiroki, Watanabe, Mori, Tokuda, Masashi, Suzuki, Shota, Imada, Eria, Ibe, Takashi, Arakawa, Tomonori, Yoshida, Hiroyuki, Ishizuka, Hiroaki, Kobayashi, Kensuke, Niimi, Yasuhiro |
| المصدر: | Scientific Reports 10, 2525 (2020) |
| سنة النشر: | 2020 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science |
| الوصف: | Spintronic devices using antiferromagnets (AFMs) are promising candidates for future applications. Recently, many interesting physical properties have been reported with AFM-based devices. Here we report a butterfly-shaped magnetoresistance (MR) in a micrometer-sized triangular-lattice antiferromagnet Ag$_2$CrO$_2$. The material consists of two-dimensional triangular-lattice CrO$_2$ layers with antiferromagnetically coupled $S$ = 3/2 spins and Ag$_2$ layers with high electrical conductivity. The butterfly-shaped MR appears only when the magnetic field is applied perpendicularly to the CrO$_2$ plane with the maximum MR ratio ($\approx$ 15%) at the magnetic ordering temperature. These features are distinct from those observed in conventional magnetic materials. We propose a theoretical model where fluctuations of partially disordered spins with the Ising anisotropy play an essential role in the butterfly-shaped MR in Ag$_2$CrO$_2$. Comment: 25 pages, 6 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1038/s41598-020-59578-z |
| URL الوصول: | http://arxiv.org/abs/2008.09945 |
| رقم الأكسشن: | edsarx.2008.09945 |
| قاعدة البيانات: | arXiv |
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