Dresden 2026 – scientific programme

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O: Fachverband Oberflächenphysik

O 89: Spins on surfaces at the atomic scale II

O 89.11: Talk

Thursday, March 12, 2026, 17:30–17:45, WILL/A317

Inelastic Zoo: Spin, Vibrational, and Orbital Excitations in Conductance Spectra — •Arnab Banerjee, Richard Berndt, and Alexander Weismann — Institut für Experimentelle und Angewandte Physik, CAU Kiel, Germany

First-principle predictions of excitation energies and cross sections in inelastic tunneling spectroscopy are challenging, making it difficult to assign experimental features to specific excitations. There is a need for a reliable identification of conductance features. We investigated the spin-1/2 molecule cobaltocene on superconducting Pb(110) and use Yu-Shiba-Rusinov states combined with a superconducting tip to detect a large number of sharp spectral features. From a peak shape analysis, we find the coexistence of spin, vibrational, and orbital excitations within a single conductance spectrum.

Keywords: inelastic tunneling spectroscopy; orbital excitation; spin excitation; vibrational excitation; Yu-Shiba-Rusinov states