Quantifying the quantum nature of high-spin YSR excitations in transverse magnetic field.
Physik
Superconductivity (cond-mat.supr-con)
Condensed Matter - Mesoscale and Nanoscale Physics
quantum nature
transverse magnetic field
high-spin YSR excitations
Scanning Probe Microscopy
Condensed Matter - Superconductivity
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
FOS: Physical sciences
Physical and Materials Sciences
530
DOI:
10.17169/refubium-45571
Publication Date:
2024-10-18
AUTHORS (7)
ABSTRACT
Excitations of individual and coupled spins on superconductors provide a platform to study quantum spin impurity models as well as a pathway toward realizing topological quantum computing. Here, we characterize, using ultralow temperature scanning tunneling microscopy/spectroscopy, the Yu-Shiba-Rusinov (YSR) states of individual manganese phthalocyanine molecules with high spin on an ultrathin lead film in variable transverse magnetic field. We observe two types of YSR excitations, depending on the adsorption geometry. Using a zero-bandwidth model, we detail the role of the magnetic anisotropy, spin-spin exchange, and Kondo exchange. We illustrate that one molecular type can be treated as an individual spin, whereas the other type is best described by a coupled spin system. Using the field dependence of the YSR excitations combined with modeling, we describe the quantum phase of each excitation type. These results provide an insight into the quantum nature of YSR excitations in magnetic field and a platform to study spin impurity models on superconductors in magnetic field.
SUPPLEMENTAL MATERIAL
Coming soon ....
REFERENCES ()
CITATIONS ()
EXTERNAL LINKS
PlumX Metrics
RECOMMENDATIONS
FAIR ASSESSMENT
Coming soon ....
JUPYTER LAB
Coming soon ....