Quantum-Material Josephson Junctions: Unconventional Barriers, Emerging Functionality
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866908899461824512 |
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| author | Pitton, Kathryn A. Dubbelman, Michiel P. Kyrk, Trent M. Haje, Houssam El Mrabet Tang, Yaozu van der Kolk, Roald J. H. Blanter, Yaroslav M. Ali, Mazhar N |
| author_facet | Pitton, Kathryn A. Dubbelman, Michiel P. Kyrk, Trent M. Haje, Houssam El Mrabet Tang, Yaozu van der Kolk, Roald J. H. Blanter, Yaroslav M. Ali, Mazhar N |
| contents | Josephson junctions translate quantum phase coherence into an electrical response and underpin superconducting sensors and quantum circuits. In conventional junctions, the barrier acts primarily as a passive weak link, however, when the barrier is a quantum material with its own internal degrees of freedom like magnetism, strong correlations, or switchable polarization, the Josephson effect becomes a sensitive probe of symmetry and many-body physics in the interlayer. Here we review progress in quantum-material Josephson junctions, (QMJJ) focusing on three rapidly advancing barrier families: 1. magnetic barriers, where exchange, noncollinearity, and spin-active scattering enable 0-π-ϕ ground states, singlet-triplet conversion, and nonreciprocal transport, 2. correlated barriers, where proximity effects acquire many-body character and recent van der Waals Kagome Mott interlayers exhibit field-free Josephson diode behavior, and 3. ferroelectric and multiferroic barriers, where nonvolatile polarization provides an internal control knob and can produce superconducting memory and memristive dynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_17921 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Quantum-Material Josephson Junctions: Unconventional Barriers, Emerging Functionality Pitton, Kathryn A. Dubbelman, Michiel P. Kyrk, Trent M. Haje, Houssam El Mrabet Tang, Yaozu van der Kolk, Roald J. H. Blanter, Yaroslav M. Ali, Mazhar N Superconductivity Materials Science Josephson junctions translate quantum phase coherence into an electrical response and underpin superconducting sensors and quantum circuits. In conventional junctions, the barrier acts primarily as a passive weak link, however, when the barrier is a quantum material with its own internal degrees of freedom like magnetism, strong correlations, or switchable polarization, the Josephson effect becomes a sensitive probe of symmetry and many-body physics in the interlayer. Here we review progress in quantum-material Josephson junctions, (QMJJ) focusing on three rapidly advancing barrier families: 1. magnetic barriers, where exchange, noncollinearity, and spin-active scattering enable 0-π-ϕ ground states, singlet-triplet conversion, and nonreciprocal transport, 2. correlated barriers, where proximity effects acquire many-body character and recent van der Waals Kagome Mott interlayers exhibit field-free Josephson diode behavior, and 3. ferroelectric and multiferroic barriers, where nonvolatile polarization provides an internal control knob and can produce superconducting memory and memristive dynamics. |
| title | Quantum-Material Josephson Junctions: Unconventional Barriers, Emerging Functionality |
| topic | Superconductivity Materials Science |
| url | https://arxiv.org/abs/2603.17921 |