Emergence of Exotic Spin Texture in Supramolecular Metal Complexes on a 2D Superconductor
Designer heterostructures have offered a very powerful strategy to create exotic superconducting states by combining magnetism and superconductivity. In this Letter, we use a heterostructure platform combining supramolecular metal complexes (SMCs) with a quasi-2D van der Waals superconductor NbSe_{2}. Our scanning tunneling microscopy measurements demonstrate the emergence of Yu-Shiba-Rusinov bands arising from the interaction between the SMC magnetism and the NbSe_{2} superconductivity. Using x-ray absorption spectroscopy and x-ray magnetic circular dichroism measurements, we show the presence of antiferromagnetic coupling between the SMC units. These result in the emergence of an unconventional 3×3 reconstruction in the magnetic ground state that is directly reflected in real space modulation of the Yu-Shiba-Rusinov bands. The combination of flexible molecular building blocks, frustrated magnetic textures, and superconductivity in heterostructures establishes a fertile starting point to fabricating tunable quantum materials, including unconventional superconductors and quantum spin liquids.
Authors
- Peter Liljeroth (ORCID: https://orcid.org/0000-0003-1253-8097)
- Fabio Donati (ORCID: https://orcid.org/0000-0002-3932-2889)
- Shawulienu Kezilebieke (ORCID: https://orcid.org/0000-0003-4166-5079)
- Stefano Reale (ORCID: https://orcid.org/0000-0003-1186-6232)
- Danilo Longo (ORCID: https://orcid.org/0000-0001-9580-464X)
- José Luis Lado (ORCID: https://orcid.org/0000-0002-9916-1589)
- Adam Stuart Foster (ORCID: https://orcid.org/0000-0001-5371-5905)
- Linghao Yan (ORCID: https://orcid.org/0000-0002-4860-8096)
- Orlando José Silveira (ORCID: https://orcid.org/0000-0002-0403-9485)
- Atte Martikainen (ORCID: https://orcid.org/0000-0003-1407-3078)
- Viliam Vaňo (ORCID: https://orcid.org/0000-0003-1050-3931)
- Massine Kelaï (ORCID: https://orcid.org/0000-0002-3627-6987)
- Jaehyun Lee (ORCID: https://orcid.org/0009-0000-5777-7839)
- Mohammad Amini (ORCID: https://orcid.org/0000-0001-7325-4640)
Institutions
- Kanazawa University (JP)
- University of Helsinki (FI)
- Ewha Womans University (KR)
- Helsinki Institute of Physics (FI)
- Soochow University (CN)
- Institute of Molecular Functional Materials (CN)
- Institute for Basic Science (KR)
- Center for Quantum Nanoscience (KR)
- Life Science Institute (JP)
- CIC nanoGUNE (ES)
- Ewha Womans University Medical Center (KR)
- Politecnico di Milano (IT)
- University of Jyväskylä (FI)
- Aalto University (FI)
Publication Details
- Journal
- Physical Review Letters
- Published
- 2024-12-06
- DOI
- https://doi.org/10.1103/physrevlett.133.236203
- Citations
- 4
- Primary Topic
- Advanced Condensed Matter Physics
- Type
- article
- Field-Weighted Citation Impact
- 1.24
Funders
- Agence Nationale de la Recherche
- Ministry of Education, Culture, Sports, Science and Technology
- Academy of Finland
- China Scholarship Council
- Natural Science Foundation of Jiangsu Province
- Institute for Basic Science
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Higher Education Discipline Innovation Project
- H2020 European Research Council
- H2020 Marie Skłodowska-Curie Actions