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Superconducting-molecular interfaces

Funder: UK Research and InnovationProject code: 2130184
Funded under: EPSRC

Superconducting-molecular interfaces

Description

This in an experimental project to investigate the origin and potential for the paramagnetic Meissner effect, the emergence and long diffusion of Cooper pairs and spin triplets at molecular/superconductor (SC) and molecular/metal/SC structures. By measuring molecular layers with and without metal interfaces, we will first determine the role of molecular distortion and the propagation of Cooper pairs in these structures. We will also confirm the presence of a spin ordering in proximity to superconductors and will determine the characteristic length of this effect. Our previous results show evidence for the formation of magnetic interfaces in metallomolecular interfaces [1,2]. Vortex pinning via C60, a paramagnetic Meissner effect, and local magnetic fields in C60/Cu could coexist with an induced superconductivity when deposited on top of a superconductor. The use of superconducting and/or magnetic electrodes to support long-range correlations that could extend throughout the system has the potential for impact on applications such as such eco-friendly high-speed computing and magnetic memories using Cooper pair triplets carrying spin information [3]. Superconducting proximity effects may lift the resistive limitation of normal-state contacts and pave the way to single spin and spin triplet transport in molecules. New methods to engineer electro-optical manipulation [4] (gating) and/or to study the coupling between molecules and topological materials [5] can be considered. Preserving the spin ordering without destroying superconductivity would lead to new paths to quantum computing and other carbon-based devices.

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