Year: 2026
Type: article
Abstract: ABSTRACT The combination of superconductivity and magnetic textures leads to unconventional superconducting phenomena, including new correlated and topological phases. Van der Waals (vdW) materials emerge as a versatile platform for exploring the interplay between these two competing orders. Here, we report on individual // Josephson junctions behaving as superconducting quantum interference devices (SQUIDs), which we attribute to the interplay between the superconductivity of and the spin texture of the vdW antiferromagnetic insulator . This behavior persists for in‐plane magnetic fields of at least 6 T and is the result of interference between separated transport channels. Microscopic modeling of the antiferromagnet insulator/superconductor (AFI/S) interface reveals the formation of localized states at the edges of the junction that can lead to channels that dominate transport. Our findings highlight AFI/S heterostructures as a platform for engineering novel superconducting phenomena and establish a new route for lithography‐free SQUIDs that operate in high magnetic fields.
Source: Advanced Materials
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $6,070
Awards: G1052875200, G1083870066, G1546822198, G16612911, G2041293508, G2109078276, G225243530, G2289397861, G2507833352, G300967939, Grundlagen und Anwendungen zweidimensionaler supraleitender Spintronik, G349028621, G3568211837, A bottom-up topological superconductor based on quantum dot arrays, G4529695718, G59358312, G6789738358, G69301431, G8113820191, G865350703
OpenAlex ID: W7126156267