KIT | KIT-Bibliothek | Impressum | Datenschutz

Spin-orbital Yu-Shiba-Rusinov states in single Kondo molecular magnet

Xia, Hui-Nan; Minamitani, Emi; Žitko, Rok; Liu, Zhen-Yu; Liao, Xin; Cai, Min; Ling, Zi-Heng; Zhang, Wen-Hao; Klyatskaya, Svetlana 1; Ruben, Mario 1,2; Fu, Ying-Shuang
1 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)
2 Institut für QuantenMaterialien und Technologien (IQMT), Karlsruher Institut für Technologie (KIT)


Studies of single-spin objects are essential for designing emergent quantum states. We investigate a molecular magnet Tb$_2$Pc$_3$ interacting with a superconducting Pb(111) substrate, which hosts unprecedented Yu-Shiba-Rusinov (YSR) subgap states, dubbed spin-orbital YSR states. Upon adsorption of the molecule on Pb, the degeneracy of its lowest unoccupied molecular orbitals (LUMO) is lifted, and the lower LUMO forms a radical spin via charge transfer. This leads to Kondo screening and subgap states. Intriguingly, the YSR states display two pairs of resonances with clearly distinct behavior. The energy of the inner pair exhibits prominent inter and intra molecular variation, and it strongly depends on the tip height. The outer pair, however, shifts only slightly. As is unveiled through theoretical calculations, the two pairs of YSR states originate from the ligand spin and charge-fluctuating higher LUMO, coexisting in a single molecule, but only weakly coupled presumably due to different spatial distribution. Our work paves the way for understanding complex many-body excitations and constructing molecule-based topological superconductivity.

Verlagsausgabe §
DOI: 10.5445/IR/1000152668
Veröffentlicht am 15.11.2022
DOI: 10.1038/s41467-022-34187-8
Zitationen: 4
Zitationen: 4
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Institut für QuantenMaterialien und Technologien (IQMT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 2041-1723
KITopen-ID: 1000152668
HGF-Programm 47.11.02 (POF IV, LK 01) Emergent Quantum Phenomena
Erschienen in Nature Communications
Verlag Nature Research
Band 13
Seiten Art.-Nr.: 6388
Vorab online veröffentlicht am 27.10.2022
Schlagwörter Magnetic properties and materials, Superconducting properties and materials
Nachgewiesen in Dimensions
Web of Science
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page