10 papers
Symmetry-Induced Weyl Nodes in Interacting Multi-Terminal Josephson Junctions
Peter Zalom, Gustavo Diniz, David Christian Ohnmacht +1
We show that an emergent geometric symmetry generates non-trivial topology in quantum-dot-based multi-terminal Josephson junctions. It confines same-spin Andreev bound state crossi…
The role of charge in thermodynamic uncertainty relations
David Christian Ohnmacht, Wolfgang Belzig, Juan Carlos Cuevas
We demonstrate that the charge value of transport mechanisms heavily impacts the validity of thermodynamic uncertainty relations (TURs). Specifically, we show within the framework…
Reflectionless modes as a source of Weyl nodes in multiterminal Josephson junctions
David Christian Ohnmacht, Valentin Wilhelm, Wolfgang Belzig
Multiterminal Josephson junctions are a promising platform to study non-trivial topology in engineered quantum systems. Yet, experimentally meaningful insight into what exactly mak…
Full Counting Statistics of Yu-Shiba-Rusinov Bound States
David Christian Ohnmacht, Wolfgang Belzig, Juan Carlos Cuevas
With the help of scanning tunneling microscopy (STM) it has become possible to address single magnetic impurities on superconducting surfaces and to investigate the peculiar proper…
Non-hermitian topology in multiterminal superconducting junctions
David Christian Ohnmacht, Valentin Wilhelm, Hannes Weisbrich +1
Recent experimental advancements in dissipation control have yielded significant insights into non-hermitian Hamiltonians for open quantum systems. Of particular interest are the t…
Thermodynamic uncertainty relations in superconducting junctions
David Christian Ohnmacht, Juan Carlos Cuevas, Wolfgang Belzig +3
Quantum conductors attached to metallic reservoirs have been demonstrated to overcome the thermodynamic uncertainty relation (TUR), a trade-off relation between the amount of dissi…