Project description
Novel spin-based approaches to transforming data processing and storage
Traditional computers consume a lot of energy as they use electric charge to process information. Spin-based computing is a new, energy-efficient approach that uses spin waves (called magnons) to carry information. In antiferromagnetic materials, two types of magnons with opposite spins interact, creating complex dynamics that can be controlled. The ERC-funded POSA project will investigate how to use pure spin currents to control these magnons in antiferromagnetic insulators. In particular, POSA has three goals: building a platform to manipulate pseudospin states for spin-based data processing; creating spin-torque oscillators for generating frequency combs in the microwave and terahertz regimes; and developing artificial neurons for magnonic neural networks and reservoir computing.
Objective
Spin-based information processing is a viable alternative to charge-based approaches, enabling low-power devices. In magnetically ordered systems, spin information can be transported via the quantized excitations of the magnetic lattice, called magnons. In an antiferromagnetic system, we generally find two degenerate magnon modes with opposite Néel precession chirality, i.e. opposite spin. These two modes can couple and give rise to complex dynamics and superposition states. I could show that these dynamics can be well described via the pseudospin and its dynamics. My group showed experimentally that electrical pure spin current injection and detection in hematite thin films gives access to the coherent pseudospin dynamics and leads to the manifestation of the magnon Hanle effect.
I propose to investigate the coherent spin dynamics induced by pure spin currents in antiferromagnetic insulators, which open up new avenues for energy-efficient information processing beyond von Neumann architectures.
The project aims to achieve three main objectives:
1) Establish an experimental platform for pseudospin-based antiferromagnetic magnonics with efficient generation, manipulation, and detection of pseudospin states utilizing antiferromagnetic insulators. This provides the potential for a paradigm shift in magnonics away from wave-based towards spin-based information processing and encoding.
2) Realize pure spin current-driven spin-torque oscillators in antiferromagnetic insulators. This enables the on-chip generation of frequency combs in the microwave and terahertz regime and coherent magnon generation.
3) Explore spiking artificial neurons based on antiferromagnetic spin-torque oscillators. This provides a pathway towards energy-efficient magnonic neural networks and reservoir computing.
The successful project will have a transformative effect for energy-efficient information processing, on-chip generation of frequency combs, and hardware for artificial neural networks.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences physical sciences condensed matter physics quasiparticles
- natural sciences computer and information sciences data science data processing
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Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.1 - European Research Council (ERC)
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Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-ERC - HORIZON ERC Grants
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Call for proposal
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(opens in new window) ERC-2024-COG
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80539 MUNCHEN
Germany
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