Gate-tunable giant superconducting nonreciprocal transport in few-layer $T_{\mathrm{d}}$-MoTe${}_2$

Abstract

We demonstrate gate-tunable giant field-dependent nonreciprocal transport (magnetochiral anisotropy) in a noncentrosymmetric superconductor $T_{\mathrm{d}}$-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 $T_{\mathrm{d}}$-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.

14 pages, 12 figures

References in corpus (4)

• Fast pick up technique for high quality heterostructures of bilayer graphene and hexagonal boron nitride
• Supercurrent diode effect and magnetochiral anisotropy in few-layer NbSe${}_2$
• Giant magnetochiral anisotropy from quantum confined surface states of topological insulator nanowires
• Scaling Theory of Quantum Ratchet

Cited by in corpus (8)

• Topological Superconductivity in Monolayer T${}_{\text{d}}$-MoTe${}_2$
• Transverse Cooper-Pair Rectifier
• Nonreciprocal charge transport in polar Dirac metals with tunable spin-valley coupling
• Josephson diode effect in nanowire-based Andreev molecules
• Systematic study of superconductivity in few-layer $T_d$-MoTe${}_2$
• Robustness of the Kohn-Luttinger mechanism against symmetry breaking
• Nonreciprocal charge transport in an iron-based superconductor with broken inversion symmetry engineered by a hydrogen-concentration gradient
• Unveiling a Hidden Percolation Transition in Monitored Clifford Circuits: Inroads from ZX-Calculus