Twisted cuprate van der Waals heterostructures with controlled Josephson coupling

Abstract

Twisted van der Waals (vdW) heterostructures offer a unique platform for engineering the efficient Josephson coupling between cuprate thin crystals harboring the nodal superconducting order parameter. Preparing vdW heterostructures-based Josephson junction comprising stacked cuprates requires maintaining an ordered interface with preserved surface superconductivity. Here, we report the preparation of the Josephson junction out of the stacked Bi2Sr2CuCa2O8+d crystals using the cryogenic dry transfer technique and encapsulating the junction with an insulating layer, that protects the interface during the electrical contacts evaporation at the 10-6 mbar base pressure. We find that the Josephson critical current Ic has a maximum at low twist angles, comparable to that of the bulk intrinsic Josephson junctions, and is reduced by two orders of magnitude at twist angles close to 45°. The reduction of Ic occurs due to a mismatch between superconducting d-wave order parameters, which suppresses the direct Cooper pair tunneling.

References in corpus (6)

• Two Dimensional Atomic Crystals
• Scale-free structural organization of oxygen interstitials in La2CuO4+y
• High-temperature topological superconductivity in twisted double layer copper oxides
• The c-axis transport in naturally-grown Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ cross-whisker junctions
• Twisted van der Waals Josephson junction based on high-Tc superconductor
• On-demand local modification of high-$T_{\text{c}}$ superconductivity in few unit-cell thick Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$

Cited by in corpus (22)

• Engineered Josephson diode effect in kinked Rashba nanochannels
• 2D high temperature superconductor integration in contact printed circuit boards
• A primary quantum current standard based on the Josephson and the quantum Hall effects
• Investigating Josephson plasmons in layered cuprates via nonlinear terahertz spectroscopy
• Cuprate Twistronics for Quantum Hardware
• Probing the order parameter symmetry of two-dimensional superconductors by twisted Josephson interferometry
• Doping dependence of chiral superconductivity in near $45^{\circ }$ twisted bilayer cuprates
• Tuning topological superconductivity within the $t$-$J$-$U$ model of twisted bilayer cuprates
• Evolution of dissipative regimes in atomically thin ${\text{Bi}}_2{\text{Sr}}_2{\text{CaCu}}_2{\text{O}}_{8+x}$ superconductor
• Hall-effect in the MnBi_2Te_4 crystal using silicon nitride nanomembrane via contacts
• Josephson coupling in Lanthanum-based cuprates superlattices
• Doping Dependence of Spin-Momentum Locking in Bismuth-Based High-Temperature Cuprate Superconductors
• Preserving the Josephson Coupling of Twisted Cuprate Junctions via Tailored Silicon Nitride Circuits Boards
• Angular momentum of vortex-core Majorana zero modes
• Flux-Tunable Regimes and Supersymmetry in Twisted Cuprate Heterostructures
• Inducing ${\mathbb{Z}}_2$ Topology in Twisted Nodal Superconductors
• Twisted Nodal Superconductors
• Exploring van der Waals cuprate superconductors using a hybrid microwave circuit
• Supermodulation-driven evolution of the nodal structure of bismuth-based cuprate superconductors
• Gap structure and phase diagram of twisted bilayer cuprates from a microscopic perspective
• High magnetic field response of superconductivity dome in quantum artificial High Tc superlattices with variable geometry
• Quantifying Twist Angles in Cuprate Heterostructures with Anisotropic Raman Signatures