Breakthrough in Quantum Modeling with Nanographenes Supported by FUNLAYERS
Joaquín Fernández-Rossier and João Henriques, INL
Researchers at the International Iberian Nanotechnology Laboratory (INL), with the support of the FUNLAYERS project, have achieved a major milestone in quantum materials research. Collaborating with leading institutions, including Empa, the Technical University of Dresden, and the Max Planck Institute of Microstructure Physics, the team has introduced an innovative platform for investigating and controlling topological phases in quantum systems. This work was recently published in Nature Nanotechnology.
The study leveraged nanographene-based structures, specifically “Clar’s goblets,” to create alternating-exchange Heisenberg spin chains. Using on-surface synthesis, the researchers precisely manipulated atomic-level spin properties within a controlled structure, opening new avenues for exploring topological quantum phases. This approach allowed for the observation of “triplons,” gapped magnetic excitations within the spin chains, with spin interactions varying depending on the structure and termination of the chains.
This discovery highlights the potential of nanographene platforms to advance our understanding of quantum materials, with far-reaching implications for future quantum computing and simulations. By enabling intricate control over topological phases, this research supports the development of transformative quantum technologies.
Using special nanographene molecules, the researchers were able to discern a theoretical model from quantum physics. Image: Empa
Looking forward, the team plans to enhance the coherence of these spin systems by isolating them from metallic substrates, ultimately aiming to establish scalable quantum devices using custom-designed carbon nanomaterials. This breakthrough, funded by FUNLAYERS, marks a significant step in designing advanced quantum systems through nanotechnology.