143 citations · 369 across the 8 of their papers we have counts for
8 papers
Modified Low-Temperature Scanning Tunneling Microscope for Ultrafast Pump-Probe Spectroscopy
Vibhuti N. Rai, Junyoung Sim, Nils Bogdanoff +7
Combining scanning tunneling microscopy (STM) with terahertz pulses (THz-STM) enables ultrafast dynamics of phonons, spins, and charge carriers to be probed with atomic-scale spati…
Influence of atomic-scale defects on coherent phonon excitations by THz near fields in an STM
Vibhuti N. Rai, Junyoung Sim, Florian Faaber +7
Coherent phonons describe the collective, ultrafast motion of atoms and play a central role in light-induced structural dynamics. Here, we employ terahertz scanning tunneling micro…
Diode effect in Josephson junctions with a single magnetic atom
Martina Trahms, Larissa Melischek, Jacob F. Steiner +8
Current flow in electronic devices can be asymmetric with bias direction, a phenomenon underlying the utility of diodes and known as non-reciprocal charge transport. The promise of…
Moiré tuning of spin excitations: Individual Fe atoms on MoS/Au(111)
Sergey Trishin, Christian Lotze, Nils Bogdanoff +2
Magnetic adatoms on surfaces are exchange coupled to their environment, inducing fast relaxation of excited spin states and decoherence. These interactions can be suppressed by ins…
Photon-assisted tunneling at the atomic scale: Probing resonant Andreev reflections from Yu-Shiba-Rusinov states
Olof Peters, Nils Bogdanoff, Sergio Acero Gonzalez +6
Tunneling across superconducting junctions proceeds by a rich variety of processes, which transfer single electrons, Cooper pairs, or even larger numbers of electrons by multiple A…
Mapping the perturbation potential of metallic and dipolar tips in tunneling spectroscopy on MoS
Nils Krane, Christian Lotze, Nils Bogdanoff +4
Scanning tunneling spectroscopy requires the application of a potential difference between the sample and a tip. In metal-vacuum-metal junctions, one can safely assume that the pot…
Tuning the coupling of an individual magnetic impurity to a superconductor: quantum phase transition and transport
Laëtitia Farinacci, Gelavizh Ahmadi, Gaël Reecht +6
The exchange scattering at magnetic adsorbates on superconductors gives rise to Yu-Shiba-Rusinov (YSR) bound states. Depending on the strength of the exchange coupling, the magneti…
Graphene pn-junction in a quantizing magnetic field: Conductance at intermediate disorder strength
Christian Fraessdorf, Luka Trifunovic, Nils Bogdanoff +1
In a graphene {\em pn} junction at high magnetic field, unidirectional "snake states" are formed at the {\em pn} interface. In a clean {\em pn} junction, each snake state exists in…