19 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…
Yu-Shiba-Rusinov States in Ising Superconductors
Michael Hein, Juan Carlos Cuevas, Wolfgang Belzig
The nature of the superconducting state in two-dimensional transition-metal dichalcogenides remains under active debate. A widely used description invokes so-called \textit{Ising s…
Nonequilibrium Kramers Turnover in a Kerr Parametric Oscillator
Daniel K. J. BoneÃ, Gabriel Margiani, Wolfgang Belzig +2
Activation processes govern noise-induced switching between long-lived states. In an equilibrium double well, the thermally activated switching rate exhibits a prefactor with a non…
Transparency-controlled multiple charge transfer in superconducting junctions with local shot-noise scanning tunneling spectroscopy
Yudai Sato, Maialen Ortego Larrazabal, Jian-Feng Ge +6
Charge transport in superconducting junctions at finite voltages is governed by Andreev reflections, including multiple Andreev reflections, which are processes that enable multipl…
Identical, independent quantum weak measurements violate objective realism
Tomasz Rybotycki, Tomasz BiaÅecki, Josep Batle +4
We demonstrate violation of objective realism in quantum world using unconstrained weak measurements. Instead of limited Leggett-Garg approach with artificial bounds on the observe…
Collapse of the superconducting order parameter in Ising superconductors with Rashba spin-orbit coupling
J. S. Harms, M. Hein, W. Belzig
Ising superconductors have attracted quite some attention recently, due to their resilience against magnetic fields way beyond the Pauli-paramagnetic limit. Their protection agains…