Tunable superconducting diode effect in higher-harmonic InSb nanosheet interferometers
arXiv:2502.13391 · doi:10.1088/1367-2630/adb6ce
Abstract
Superconducting diodes, characterized by the nonreciprocal supercurrent flow, have gained significant attention for their potential in dissipationless electronics. This study presents a superconducting quantum interference device (SQUID) composed of two Al-InSb nanosheet Josephson junctions. Utilizing prepatterned local backgates, we achieve a gate- and flux-tunable superconducting diode with controllable efficiency in both amplitude and sign. Numerical simulations attribute the diode effect to higher harmonics in the current-phase relation. Crucially, fractional Shapiro step experiments provide direct insights into the evolution of these higher harmonics with flux tuning, showcasing significant enhancements in the second-harmonic signatures of the SQUID near half-integer flux quanta. Furthermore, we investigate the microwave-assisted diode response and experimentally show that the polarity of the diode effect can be switched by the microwave power. These results demonstrate the potential of InSb nanosheet-based hybrid devices as highly tunable elements for use in dissipationless electronics.
References in corpus (37)
- Superconducting Spintronics
- Quantum information processing with superconducting circuits: a review
- Realization of the field-free Josephson Diode
- A Josephson junction supercurrent diode
- Supercurrent diode effect and finite momentum superconductivity
- Zero-field superconducting diode effect in small-twist-angle trilayer graphene
- Anomalous Josephson effect induced by spin-orbit interaction and Zeeman effect in semiconductor nanowires
- Universal Josephson diode effect
- The Josephson diode effect in supercurrent interferometers
- Gate-tunable Superconducting Diode Effect in a Three-terminal Josephson Device
- Diode effect in Josephson junctions with a single magnetic atom
- Josephson Diode Effect in High Mobility InSb Nanoflags
- Gate-Defined Josephson Junctions in Magic-Angle Twisted Bilayer Graphene
- A Parity-Protected Superconductor-Semiconductor Qubit
- Asymmetric higher-harmonic SQUID as a Josephson diode
- Superconducting diode effect due to magnetochiral anisotropy in topological insulator and Rashba nanowires
- Gate Tunable Josephson Diode in Proximitized InAs Supercurrent Interferometers
- Free-Standing Two-Dimensional Single-Crystalline InSb Nanosheets
- Josephson Diode Effect Induced by Valley Polarization in Twisted Bilayer Graphene
- Parity-conserving Cooper-pair transport and ideal superconducting diode in planar Germanium
- Diamagnetic mechanism of critical current non-reciprocity in multilayered superconductors
- Non-reciprocity of Vortex-limited Critical Current in Conventional Superconducting Micro-bridges
- Effects of spin-orbit coupling and spatial symmetries on the Josephson current in SNS junctions
- Josephson diode effect derived from short-range coherent coupling
- Superconducting Diode Effect Sign Change in Epitaxial Al-InAs Josepshon Junctions
- Link between supercurrent diode and anomalous Josephson effect revealed by gate-controlled interferometry
- Microwave-Tunable Diode Effect in Asymmetric SQUIDs with Topological Josephson Junctions
- Tuning the Josephson diode response with an ac current
- Charge-4e supercurrent in a two-dimensional InAs-Al superconductor-semiconductor heterostructure
- Crossed Andreev Reflection in InSb Flake Josephson Junctions
- Half-integer Shapiro steps in highly transmissive InSb nanoflag Josephson junctions
- Gate-defined Quantum Point Contact in an InSb Two-dimensional Electron Gas
- Large Second-Order Josephson Effect in Planar Superconductor-Semiconductor Junctions
- From nonreciprocal to charge-4e supercurrents in Ge-based Josephson devices with tunable harmonic content
- Microwave-assisted unidirectional superconductivity in Al-InAs nanowire-Al junctions under magnetic fields
- Supercurrent, Multiple Andreev Reflections and Shapiro Steps in InAs Nanosheet Josephson Junctions
- The influence of magnetic vortices motion on the inverse ac Josephson effect in asymmetric arrays
Cited by in corpus (5)
- Superconducting Quantum Interference Devices based on InSb nanoflag Josephson junctions
- Diode effect in Shapiro steps in an asymmetric SQUID with a superconducting nanobridge
- Supercurrent and multiple Andreev reflections in Ge hut nanowire Josephson Junctions
- Ubiquitous missing first Shapiro step in Al-InSb nanosheet Josephson junctions
- Spin splitting, Kondo correlation and singlet-doublet quantum phase transition in a superconductor-coupled InSb nanosheet quantum dot