TY - JOUR
T1 - Emergence of Exotic Spin Texture in Supramolecular Metal Complexes on a 2D Superconductor
AU - Vaňo, Viliam
AU - Reale, Stefano
AU - Silveira, Orlando J.
AU - Longo, Danilo
AU - Amini, Mohammad
AU - Kelai, Massine
AU - Lee, Jaehyun
AU - Martikainen, Atte
AU - Kezilebieke, Shawulienu
AU - Foster, Adam S.
AU - Lado, Jose L.
AU - Donati, Fabio
AU - Liljeroth, Peter
AU - Yan, Linghao
N1 - Publisher Copyright:
© 2024 American Physical Society.
PY - 2024/12/6
Y1 - 2024/12/6
N2 - 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 NbSe2. Our scanning tunneling microscopy measurements demonstrate the emergence of Yu-Shiba-Rusinov bands arising from the interaction between the SMC magnetism and the NbSe2 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.
AB - 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 NbSe2. Our scanning tunneling microscopy measurements demonstrate the emergence of Yu-Shiba-Rusinov bands arising from the interaction between the SMC magnetism and the NbSe2 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.
UR - http://www.scopus.com/inward/record.url?scp=85213295304&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.133.236203
DO - 10.1103/PhysRevLett.133.236203
M3 - Article
C2 - 39714702
AN - SCOPUS:85213295304
SN - 0031-9007
VL - 133
JO - Physical Review Letters
JF - Physical Review Letters
IS - 23
M1 - 236203
ER -