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End states and subgap structure in proximity-coupled chains of magnetic adatoms
Michael Ruby, Falko Pientka, Yang Peng +3
A recent experiment [Nadj-Perge et al., Science 346, 602 (2014)] provides evidence for Majorana zero modes in iron (Fe) chains on the superconducting Pb(110) surface. Here, we stud…
Many-body Green's function theory for electron-phonon interactions: the Kadanoff-Baym approach to spectral properties of the Holstein dimer
N. Säkkinen, Y. Peng, H. Appel +1
We present a Kadanoff-Baym formalism to study time-dependent phenomena for systems of interacting electrons and phonons in the framework of many-body perturbation theory. The forma…
Robust Majorana conductance peaks for a superconducting lead
Yang Peng, Falko Pientka, Yuval Vinkler-Aviv +2
Experimental evidence for Majorana bound states largely relies on measurements of the tunneling conductance. While the conductance into a Majorana state is in principle quantized t…
Tunneling processes into localized subgap states in superconductors
Michael Ruby, Falko Pientka, Yang Peng +3
We combine scanning-tunneling-spectroscopy experiments probing magnetic impurities on a superconducting surface with a theoretical analysis of the tunneling processes between (supe…