ArticleACS applied materials & interfaces2025
Gate-Tunable Orbital Magnetism and Competing Superconductivity in Twisted Trilayer Graphene Josephson Junctions.
Article in ACS applied materials & interfaces, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
2 citing papers in PubMed.
- Magnetism and hidden quantum geometry in charge neutral twisted trilayer graphene.Scientific reports · 2026Article
- Experimental detection of vortices in magic-angle graphene.Nature communications · 2025Article
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Authors and funding
11 authors.
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Abstract
Twisted trilayer graphene (TTG) provides a tunable moiré platform to study correlated phases emerging from flat-band physics. Here, we investigate the interplay between superconductivity and spontaneous orbital magnetism (OM) in alternating TTG devices with intermediate twist angles (1.38-1.44°). Using electrostatically defined Josephson junctions, we demonstrate that OM, stabilized near the charge neutrality point (CNP), competes with gate-induced superconductivity. The OM phase is characterized by sharp jumps in Hall resistance, current-induced bistability, and a Curie-Bloch temperature dependence, indicating broken time-reversal symmetry. Additionally, nonreciprocal Josephson transport─manifested as asymmetric Fraunhofer patterns and a superconducting diode effect─provides independent evidence of an orbital magnetic state confined to the weak link. The observed critical temperature hierarchy, where superconductivity dominates over OM at higher carrier densities and displacement fields, reveals a tunable competition between two broken-symmetry ground states. Our findings establish alternating TTG Josephson devices as a minimal and versatile platform to probe the coexistence of magnetism and superconductivity in engineered moiré systems.
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