Emergent ferromagnetism with superconductivity in Fe(Te,Se) van der Waals Josephson junctions.

ABSTRACT: Ferromagnetism and superconductivity are two key ingredients for topological superconductors, which can serve as building blocks of fault-tolerant quantum computers. Adversely, ferromagnetism and superconductivity are typically also two hostile orderings competing to align spins in different configurations, and thus making the material design and experimental implementation extremely challenging. A single material platform with concurrent ferromagnetism and superconductivity is actively pursued. In this paper, we fabricate van der Waals Josephson junctions made with iron-based superconductor Fe(Te,Se), and report the global device-level transport signatures of interfacial ferromagnetism emerging with superconducting states for the first time. Magnetic hysteresis in the junction resistance

SUBMITTER: Qiu G 

PROVIDER: S-EPMC10593760 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature