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 (20)

• Two Dimensional Atomic Crystals
• Inhomogeneity of charge density wave order and quenched disorder in a high Tc superconductor
• Scale-free structural organization of oxygen interstitials in La2CuO4+y
• Evolution and Control of Oxygen Order in a Cuprate Superconductor
• High-temperature topological superconductivity in twisted double layer copper oxides
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• Electric-Field Induced Superconductor-Insulator Transitions in Exfoliated Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ Flakes
• d-like Symmetry of the Order Parameter and Intrinsic Josephson Effects in Bi2212 Cross-Whisker Junctions
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• Macroscopic Quantum Tunneling and Quasiparticle Dissipation in d-wave Superconductor Josephson Junctions
• Proximity-induced time-reversal symmetry breaking at Josephson junctions between unconventional superconductors
• The c-axis transport in naturally-grown Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ cross-whisker junctions
• Gaussian Tunneling Model of c-Axis Twist Josephson Junctions
• Suppressed Superconductivity of the Surface Conduction Layer in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+x}$ Single Crystals Probed by {\it c}-Axis Tunneling Measurements
• High-temperature Majorana zero modes
• Encapsulating high-temperature superconducting twisted van der Waals heterostructures blocks detrimental effects of disorder
• Twisted van der Waals Josephson junction based on high-Tc superconductor
• Chiral Majorana Modes via Proximity to a Twisted Cuprate Bilayer
• Current- and field-induced topology in twisted nodal superconductors
• 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 (24)

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• A primary quantum current standard based on the Josephson and the quantum Hall effects
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• 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
• Evolution of dissipative regimes in atomically thin ${\text{Bi}}_2{\text{Sr}}_2{\text{CaCu}}_2{\text{O}}_{8+x}$ superconductor
• Tuning topological superconductivity within the $t$-$J$-$U$ model of twisted bilayer cuprates
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• Hall-effect in the MnBi_2Te_4 crystal using silicon nitride nanomembrane via contacts
• 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
• Inducing ${\mathbb{Z}}_2$ Topology in Twisted Nodal Superconductors
• Twisted Nodal Superconductors
• Exploring van der Waals cuprate superconductors using a hybrid microwave circuit
• Angular momentum of vortex-core Majorana zero modes
• Flux-Tunable Regimes and Supersymmetry in Twisted Cuprate Heterostructures
• 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
• Quantifying Twist Angles in Cuprate Heterostructures with Anisotropic Raman Signatures
• High magnetic field response of superconductivity dome in quantum artificial High Tc superlattices with variable geometry