Emergence of Exotic Spin Texture in Supramolecular Metal Complexes on a 2D Superconductor.

Autor:	Vaňo V; Department of Applied Physics, Aalto University, FI-00076 Aalto, Finland., Reale S; Center for Quantum Nanoscience (QNS), Institute for Basic Science (IBS), Seoul 03760, Republic of Korea.; Ewha Womans University, Seoul 03760, Republic of Korea.; Department of Energy, Politecnico di Milano, Milano 20133, Italy., Silveira OJ; Department of Applied Physics, Aalto University, FI-00076 Aalto, Finland., Longo D; CIC nanoGUNE-BRTA, 20018 Donostia-San Sebastián, Spain., Amini M; Department of Applied Physics, Aalto University, FI-00076 Aalto, Finland., Kelai M; Center for Quantum Nanoscience (QNS), Institute for Basic Science (IBS), Seoul 03760, Republic of Korea.; Ewha Womans University, Seoul 03760, Republic of Korea., Lee J; Center for Quantum Nanoscience (QNS), Institute for Basic Science (IBS), Seoul 03760, Republic of Korea.; Department of Physics, Ewha Womans University, Seoul 03760, Republic of Korea., Martikainen A; Department of Physics, P.O. Box 4, FI-00014 University of Helsinki, Finland., Kezilebieke S; Department of Physics, Department of Chemistry and Nanoscience Center, University of Jyväskylä, FI-40014 University of Jyväskylä, Finland., Foster AS; Department of Applied Physics, Aalto University, FI-00076 Aalto, Finland.; WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan., Lado JL; Department of Applied Physics, Aalto University, FI-00076 Aalto, Finland., Donati F; Center for Quantum Nanoscience (QNS), Institute for Basic Science (IBS), Seoul 03760, Republic of Korea.; Department of Physics, Ewha Womans University, Seoul 03760, Republic of Korea., Liljeroth P; Department of Applied Physics, Aalto University, FI-00076 Aalto, Finland., Yan L; Department of Applied Physics, Aalto University, FI-00076 Aalto, Finland.; Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, China.
Jazyk:	angličtina
Zdroj:	Physical review letters [Phys Rev Lett] 2024 Dec 06; Vol. 133 (23), pp. 236203.
DOI:	10.1103/PhysRevLett.133.236203
Abstrakt:	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.
Databáze:	MEDLINE
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