تقرير
Gate-tunable giant superconducting nonreciprocal transport in few-layer $T_{\rm d}$-MoTe$_2$
| العنوان: | Gate-tunable giant superconducting nonreciprocal transport in few-layer $T_{\rm d}$-MoTe$_2$ |
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| المؤلفون: | Wakamura, T., Hashisaka, M., Hoshino, S., Bard, M., Okazaki, S., Sasagawa, T., Taniguchi, T., Watanabe, K., Muraki, K., Kumada, N. |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Superconductivity |
| الوصف: | We demonstrate gate-tunable giant field-dependent nonreciprocal transport (magnetochiral anisotropy) in a noncentrosymmetric superconductor $T_{\rm d}$-MoTe$_2$ in the thin limit. Giant magnetochiral anisotropy (MCA) with a rectification coefficient $\gamma$ = $3.1 \times 10^6$ T$^{-1}$ A$^{-1}$, is observed at 230 mK, below the superconducting transition temperature ($T_c$). This is one of the largest values reported so far and is likely attributed to the reduced symmetry of the crystal structure. The temperature dependence of $\gamma$ indicates that the ratchet-like motion of magnetic vortices is the origin of the MCA, as supported by our theoretical model. For bilayer $T_{\rm d}$-MoTe$_2$, we successfully perform gate control of the MCA and realize threefold modulation of $\gamma$. Our experimental results provide a new route to realizing electrically controllable superconducting rectification devices in a single material. Comment: 7 pages, 3 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevResearch.6.013132 |
| URL الوصول: | http://arxiv.org/abs/2303.09747 |
| رقم الأكسشن: | edsarx.2303.09747 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevResearch.6.013132 |
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