Topological Superconductivity in Monolayer T$_{\textrm{d}}$-MoTe$_2$
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866910729287761920 |
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| author | Li, Xin-Zhi Qi, Zhen-Bo Wu, Quansheng He, Wen-Yu |
| author_facet | Li, Xin-Zhi Qi, Zhen-Bo Wu, Quansheng He, Wen-Yu |
| contents | Topological superconductivity has attracted significant attention due to its potential applications in quantum computation, but its experimental realization remains challenging. Recently, monolayer T$_{\textrm{d}}$-MoTe$_2$ was observed to exhibit gate tunable superconductivity, and its in-plane upper critical field exceeds the Pauli limit. Here, we show that an in-plane magnetic field beyond the Pauli limit can drive the superconducting monolayer T$_{\textrm{d}}$-MoTe$_2$ into a topological superconductor. The topological superconductivity arises from the interplay between the in-plane Zeeman coupling and the unique \emph{Ising plus in-plane SOC} in the monolayer T$_{\textrm{d}}$-MoTe$_2$. The \emph{Ising plus in-plane SOC} plays the essential role to enable the effective $p_x+ip_y$ pairing. Importantly, as the essential \emph{Ising plus in-plane SOC} in the monolayer T$_{\textrm{d}}$-MoTe$_2$ is generated by an in-plane polar field, our proposal demonstrates that applying an in-plane magnetic field to a gate tunable 2D superconductor with an in-plane polar axis is a feasible way to realize topological superconductivity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_06858 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Topological Superconductivity in Monolayer T$_{\textrm{d}}$-MoTe$_2$ Li, Xin-Zhi Qi, Zhen-Bo Wu, Quansheng He, Wen-Yu Superconductivity Mesoscale and Nanoscale Physics Topological superconductivity has attracted significant attention due to its potential applications in quantum computation, but its experimental realization remains challenging. Recently, monolayer T$_{\textrm{d}}$-MoTe$_2$ was observed to exhibit gate tunable superconductivity, and its in-plane upper critical field exceeds the Pauli limit. Here, we show that an in-plane magnetic field beyond the Pauli limit can drive the superconducting monolayer T$_{\textrm{d}}$-MoTe$_2$ into a topological superconductor. The topological superconductivity arises from the interplay between the in-plane Zeeman coupling and the unique \emph{Ising plus in-plane SOC} in the monolayer T$_{\textrm{d}}$-MoTe$_2$. The \emph{Ising plus in-plane SOC} plays the essential role to enable the effective $p_x+ip_y$ pairing. Importantly, as the essential \emph{Ising plus in-plane SOC} in the monolayer T$_{\textrm{d}}$-MoTe$_2$ is generated by an in-plane polar field, our proposal demonstrates that applying an in-plane magnetic field to a gate tunable 2D superconductor with an in-plane polar axis is a feasible way to realize topological superconductivity. |
| title | Topological Superconductivity in Monolayer T$_{\textrm{d}}$-MoTe$_2$ |
| topic | Superconductivity Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2405.06858 |