Observation of Coexistence of Yu-Shiba-Rusinov States
and Spin-Flip Excitations
Version 2 2019-07-09, 13:05Version 2 2019-07-09, 13:05
Version 1 2019-06-28, 14:04Version 1 2019-06-28, 14:04
Posted on 2019-07-09 - 13:05
We
investigate the spectral evolution in different metal phthalocyanine
molecules on NbSe2 surface using scanning tunnelling microscopy
(STM) as a function of the coupling with the substrate. For manganese
phthalocyanine (MnPc), we demonstrate a smooth spectral crossover
from Yu-Shiba-Rusinov (YSR) bound states to spin-flip excitations.
This has not been observed previously and it is in contrast to simple
theoretical expectations. We corroborate the experimental findings
using numerical renormalization group calculations. Our results provide
fundamental new insight on the behavior of atomic scale magnetic/SC
hybrid systems, which is important, for example, for engineered topological
superconductors and spin logic devices.
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Kezilebieke, Shawulienu; Žitko, Rok; Dvorak, Marc; Ojanen, Teemu; Liljeroth, Peter (2019). Observation of Coexistence of Yu-Shiba-Rusinov States
and Spin-Flip Excitations. ACS Publications. Collection. https://doi.org/10.1021/acs.nanolett.9b01583