Materials and multilayers/nanowires for spintronics/superconducting applications

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This research proposal is focused on the investigation of materials chemistry and mesoscopic physical properties of functional electronic materials: ultra-thin magnetic films and superconducting nanobridges/nanowires for potential applications in multilayer devices. The emphasis is on the synthesis of these materials and studies of their electronic properties. This application consists of two parts that describe the proposed studies of manganite based ultra-thin film tunnel junctions and superconducting nanobridges-nanowires. The first part deals with the synthesis of the magnetic manganese oxide-based materials (manganites) and the ultra-thin films/multilayers of these compounds. The main goals of the proposed research are: (a) to find the correlation between the lattice strain and the anisotropic magneto-electric properties (such as the anisotropic magneto-resistance (AMR) and the anomalous Hall resistivity (AHR)) of ultra-thin films of these materials; (b) to synthesize ultra-thin film multilayer tunnel junctions and investigate their tunneling anisotropic magneto-resistance (TAMR), including its response to the applied strain. The strain-modulated TAMR junctions could have potential applications in switching or random access memory devices. The second part of this proposal deals with the synthesis of superconducting nanobridge/nanowire arrays and the analysis of their properties, such as the relationship between supercurrents and phase slip events. These studies are important from the point of view of the fundamental understanding of the confinement of electrons in quasi-1D structures, as well as from the viewpoint of potential applications in electronic/photonic detectors/devices.