Two-dimensional Shiba lattices as a possible platform for crystalline topological superconductivity

MO Soldini, F Küster, G Wagner, S Das… - Nature Physics, 2023 - nature.com
Localized or propagating Majorana boundary modes are the key feature of topological
superconductors. They are rare in naturally occurring compounds, but the tailored …

Quantum spins and hybridization in artificially-constructed chains of magnetic adatoms on a superconductor

E Liebhaber, LM Rütten, G Reecht, JF Steiner… - Nature …, 2022 - nature.com
Magnetic adatom chains on surfaces constitute fascinating quantum spin systems.
Superconducting substrates suppress interactions with bulk electronic excitations but couple …

Non-Majorana modes in diluted spin chains proximitized to a superconductor

F Küster, S Brinker, R Hess, D Loss… - Proceedings of the …, 2022 - National Acad Sciences
Spin chains proximitized with superconducting condensates have emerged as one of the
most promising platforms for the realization of Majorana modes. Here, we craft diluted spin …

Boosting spatial and energy resolution in STM with a double-functionalized probe

A Odobesko, RL Klees, F Friedrich, EM Hankiewicz… - Science …, 2024 - science.org
The 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 …

Wave Function Engineering on Superconducting Substrates: Chiral Yu-Shiba-Rusinov Molecules

LM Rütten, H Schmid, E Liebhaber, G Franceschi… - ACS …, 2024 - ACS Publications
Magnetic adatoms on superconductors give rise to Yu-Shiba-Rusinov (YSR) states that hold
considerable interest for the design of topological superconductivity. Here, we show that …

Yu-shiba-rusinov qubit

A Mishra, P Simon, T Hyart, M Trif - PRX Quantum, 2021 - APS
Magnetic impurities in s-wave superconductors lead to spin-polarized Yu-Shiba-Rusinov
(YSR) in-gap states. Chains of magnetic impurities offer one of the most viable routes for the …

Generalized atomic limit of a double quantum dot coupled to superconducting leads

M Žonda, P Zalom, T Novotný, G Loukeris, J Bätge… - Physical Review B, 2023 - APS
We present an exactly solvable effective model of a double quantum dot coupled to
superconducting leads. This model is a generalization of the well-known superconducting …

Quantum yu-shiba-rusinov dimers

H Schmid, JF Steiner, KJ Franke, F von Oppen - Physical Review B, 2022 - APS
Magnetic adatoms on a superconducting substrate undergo a quantum phase transition as
their exchange coupling to the conduction electrons increases. For quantum spins, this …

Search for large topological gaps in atomic spin chains on proximitized superconducting heavy-metal layers

P Beck, B Nyári, L Schneider, L Rózsa… - Communications …, 2023 - nature.com
One-dimensional systems comprising s-wave superconductivity with meticulously tuned
magnetism realize topological superconductors hosting Majorana modes whose stability is …

Anomalous excitations of atomically crafted quantum magnets

S Brinker, F Küster, SSP Parkin, P Sessi, S Lounis - Science advances, 2022 - science.org
High–energy resolution spectroscopic studies of quantum magnets proved extremely
valuable in accessing magnetodynamics quantities, such as energy barriers, magnetic …