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Magnetic, electric-field and light induced control of spin-polarized supercurrents: fundamentals for an offbeat electronics

Project description

Cutting-edge electronics harness the power of spin-polarised supercurrents

Capitalising on the unique properties of high-temperature superconductivity and spintronics, high-temperature superconducting spintronics targets the development of devices with enhanced performance and new functionalities. The ERC-funded SUSPINTRONICS project aims to further advance the field by using spin-polarised superconducting electron pairs instead of normal electrons for information transfer and manipulation. Leveraging the coherent electron transfer in superconductors, researchers aim to create multiple methods for fine-tuning the behaviour of superconducting spintronics devices, for example using magnetic fields, electric fields and light. These external factors could result in enhanced magnetic and electric memory and photosensitivity. The use of complex-oxide heterostructures will yield several effects: superconducting proximity, ferroelectric fields, spin torque and ferromagnetic resonance, and photoconductivity and photoelectricity.

Objective

This project aims at establishing the basis for high-temperature superconducting spintronics. The innovative idea is to use spin-polarized superconducting pairs -instead of normal electrons- to convey and manipulate information, taking advantage of the coherent transport inherent to superconductivity. To further increase the potential of this approach, we intend to create multiple control knobs: magnetic field, the classical one in spintronics, as well as the knobs customary in conventional electronics: electric field and light. This will endow superconducting spintronics with a magnetic and electric memory, as well as with photosensitivity. The basic ingredient for this ambitious project is complex-oxide heterostructures. The approach consists of combining the following fundamental effects:
(a) Superconducting proximity effects, in order to transfer superconductivity into ferromagnets.
(b) Ferroelectric field-effects, in order to modulate the superconductor/ferromagnet interactions and tune Josephson coupling.
(c) Spin-torque and ferromagnetic resonance effects, in order to couple superconductivity and magnetization dynamics.
(d) Photoconductivity and photoelectric effects, in order to manipulate the interactions between superconductors and ferroics.
This research is essentially fundamental, but the novel concepts pursued will increase the technological possibilities of superconductivity and spintronics -whose applications are at present completely disconnected.

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Coordinator

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS
Net EU contribution
€ 1 997 729,00
Address
Rue michel ange 3
75794 Paris
France

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Region
Ile-de-France Ile-de-France Paris
Activity type
Research Organisations
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Other funding
€ 0,00

Beneficiaries (1)