Quantum-geometric spin and charge Josephson diode effects
arXiv:2501.11751 · doi:10.1103/nb38-v1jq
Abstract
We present a general mechanism for large charge and spin Josephson diode effects in strongly spin-polarized superconductor-ferromagnet hybrid structures with a noncoplanar spin texture, formulated in terms of quantum-geometric phases. We present necessary conditions for this effect to occur, and show numerical results for disordered materials, relevant for applications. We calculate Josephson diode efficiencies for both charge- and spin-diodes and show that a spin-diode efficiency of 100% can be reached. Finally, we present a SQUID device that can switch between nearly pure spin-up and spin-down equal-spin supercurrents across the ferromagnet by reversing the flux. These findings establish functionalities that are absent for coplanar spin textures.
6 pages, 4 figures, version published in PRB
References in corpus (35)
- Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
- A topological Dirac insulator in a quantum spin Hall phase : Experimental observation of first strong topological insulator
- Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
- Spontaneous Skyrmion Ground States in Magnetic Metals
- Topological Insulator Materials
- Superconducting Spintronics
- A spin triplet supercurrent through the half-metallic ferromagnet CrO2
- Spin-polarized supercurrents for spintronics: a review of current progress
- Observation of spin-triplet superconductivity in Co-based Josephson Junctions
- A Josephson junction supercurrent diode
- Direct coupling between magnetism and superconducting current in Josephson Phi junction
- Triplet supercurrents in clean and disordered half-metallic ferromagnets
- A phenomenological theory of superconductor diodes
- Universal Josephson diode effect
- Ubiquitous Superconducting Diode Effect in Superconductor Thin Films
- Theory of the supercurrent diode effect in Rashba superconductors with arbitrary disorder
- Fully developed triplet proximity effect
- Anomalous Josephson Current in Junctions with Spin-Polarizing Quantum Point Contacts
- The Josephson diode effect in supercurrent interferometers
- Josephson Effect due to Odd-frequency Pairs in Diffusive Half Metals
- Diode effect in Josephson junctions with a single magnetic atom
- Spin-dependent Cooper Pair Phase and Pure Spin Supercurrents in Strongly Polarized Ferromagnets
- General Boundary Conditions for Quasiclassical Theory of Superconductivity in the Diffusive Limit: Application to Strongly Spin-polarized Systems
- Superconducting spintronic tunnel diode
- Hybrid helical state and superconducting diode effect in S/F/TI heterostructures
- Quantum limit of the triplet proximity effect in half-metal - superconductor junctions
- Theory of superconductor-ferromagnet point contact spectra: the case of strong spin polarization
- Tuning of Magnetic Activity in Spin-Filter Josephson Junctions Towards Spin-Triplet Transport
- Boosting spintronics with superconductivity
- Ferromagnetic Materials for Josephson π Junctions
- Phase Control in a Spin-Triplet SQUID
- Spin-polarized triplet supercurrent in Josephson junctions with perpendicular ferromagnetic layers
- Josephson diode effect in a ballistic single-channel nanowire
- Direct and inverse superspin Hall effect in two-dimensional systems: Electrical detection of spin supercurrents
- Theory of quantum-geometric charge and spin Josephson diode effects in strongly spin-polarized hybrid structures with noncoplanar spin textures
Cited by in corpus (4)
- Theory of quantum-geometric charge and spin Josephson diode effects in strongly spin-polarized hybrid structures with noncoplanar spin textures
- Spin-resolved Josephson diode effect through strongly spin-polarized conical magnets
- Enhanced Superconducting Diode Effect in the Asymmetric Hatsugai-Kohmoto Model
- Triplet correlations in superconductor/antiferromagnet heterostructures: dependence on type of antiferromagnetic ordering