92 citations · 304 across the 18 of their papers we have counts for
18 papers
Lindblad theory of linear response susceptibility and dispersive readout in minimal Kitaev junctions
Tobias Kuhn, Raffael L. Klees, Ramón Aguado +1
The field of hybrid superconductor-semiconductor quantum dots is advancing toward the development of functional devices that leverage the advantages of both types of materials. How…
Limits of Thermal Conductance Quantization in Chiral Topological Josephson Junctions
Daniel Gresta, Fernando Dominguez, Raffael L. Klees +3
We investigate thermal and non-local electrical transport in four-terminal Josephson junctions formed by a normal region coupled to two transverse chiral superconducting leads, sup…
Readout of multi-level quantum geometry from electronic transport
Raffael L. Klees, Mónica Benito
The quantum geometric tensor (QGT) of a quantum system in a given parameter space captures both the geometry of the state manifold and the topology of the system. While the local Q…
Torsional Hall Viscosity of Massive Chern Insulators: Magnetic Field and Momentum Deformations
Ioannis Matthaiakakis, Weizhen Jia, Raffael L. Klees +5
This work focuses on the non-dissipative, parity-odd spin transport of -dimensional relativistic electrons, generated by torsion, and the torsional Hall viscosity $ζ_{\rm H}…
Transport signatures of inverted Andreev bands in topological Josephson junctions
Jonathan Sturm, Raffael L. Klees, Ewelina M. Hankiewicz +1
We study the thermoelectrical transport transverse to conventional and topological Josephson junctions with a central quantum dot (QD). For that purpose, we derive an effective res…
Majorana-mediated thermoelectric transport in multiterminal junctions
Raffael L. Klees, Daniel Gresta, Jonathan Sturm +2
The unambiguous identification of Majorana zero modes (MZMs) is one of the most outstanding problems of condensed matter physics. Thermal transport provides a detection tool that i…
Ground state topology of a four-terminal superconducting double quantum dot
Lev Teshler, Hannes Weisbrich, Jonathan Sturm +3
In recent years, various classes of systems were proposed to realize topological states of matter. One of them are multiterminal Josephson junctions where topological Andreev bound…
Boosting the STM's spatial and energy resolution with double-functionalized probe tips
Artem Odobesko, Raffael L. Klees, Felix Friedrich +2
Scattering of superconducting pairs by magnetic impurities on a superconducting surface leads to pairs of sharp in-gap resonances, known as Yu-Shiba-Rusinov (YSR) bound states. Sim…
Fractional transconductance via non-adiabatic topological Cooper pair pumping
Hannes Weisbrich, Raffael L. Klees, Oded Zilberberg +1
Many robust physical phenomena in quantum physics are based on topological invariants arising due to intriguing geometrical properties of quantum states. Prime examples are the int…
Tunneling processes between Yu-Shiba-Rusinov bound states
A. Villas, R. L. Klees, G. Morrás +5
Very recent experiments have reported the tunneling between Yu-Shiba-Rusinov (YSR) bound states at the atomic scale. These experiments have been realized with the help of a scannin…
Hall viscosity and hydrodynamic inverse Nernst effect in graphene
Zhuo-Yu Xian, Sven Danz, David Rodríguez Fernández +6
Motivated by Hall viscosity measurements in graphene sheets, we study hydrodynamic transport of electrons in a channel of finite width in external electric and magnetic fields. We…
Controlling charge and spin transport in an Ising-superconductor Josephson junction
Gaomin Tang, Raffael L. Klees, Christoph Bruder +1
An in-plane magnetic field applied to an Ising superconductor converts spin-singlet Cooper pairs to spin-triplet ones. In this work, we study a Josephson junction formed by two Isi…
Spin-dependent tunneling between individual superconducting bound states
Haonan Huang, Jacob Senkpiel, Ciprian Padurariu +9
Magnetic impurities on superconductors induce discrete bound levels inside the superconducting gap, known as Yu-Shiba-Rusinov (YSR) states. YSR levels are fully spin-polarized such…
Ground-state quantum geometry in superconductor-quantum dot chains
Raffael L. Klees, Juan Carlos Cuevas, Wolfgang Belzig +1
Multiterminal Josephson junctions constitute engineered topological systems in arbitrary synthetic dimensions defined by the superconducting phases. Microwave spectroscopy enables…
Second Chern Number and Non-Abelian Berry Phase in Topological Superconducting Systems
H. Weisbrich, R. L. Klees, G. Rastelli +1
Topology ultimately unveils the roots of the perfect quantization observed in complex systems. The 2D quantum Hall effect is the celebrated archetype. Remarkably, topology can mani…
Interplay Between Yu-Shiba-Rusinov States and Multiple Andreev Reflections
Alberto Villas, Raffael L. Klees, Haonan Huang +4
Motivated by recent scanning tunneling microscopy experiments on single magnetic impurities on superconducting surfaces, we present here a comprehensive theoretical study of the in…
Microwave Spectroscopy Reveals the Quantum Geometric Tensor of Topological Josephson Matter
Raffael L. Klees, Gianluca Rastelli, Juan Carlos Cuevas +1
Quantization effects due to topological invariants such as Chern numbers have become very relevant in many systems, yet key quantities such as the quantum geometric tensor providin…
Nonequilibrium Andreev bound states population in short superconducting junctions coupled to a resonator
Raffael L. Klees, Gianluca Rastelli, Wolfgang Belzig
Inspired by recent experiments, we study a short superconducting junction of length (coherence length) inserted in a dc-SQUID containing an ancillary Josephson tunnel junc…