Anomalous Shiba spectrum and superconductivity induced magnetic interactions in materials with topological band inversion
arXiv:2403.08028 · doi:10.1103/PhysRevB.110.085134
Abstract
We study the Yu-Shiba-Rusinov states in materials with bulk band inversion such as iron-based topological superconductors or doped topological insulators. We show that the structure of the YSR state spectrum depends on the doping level relative to the chemical potential at which the band-inversion occurs. Moreover, we demonstrate that the transition from ferromagnetic to antiferromagnetic coupling and vice versa, which is caused by the coupling of magnetic impurities through the overlap of YSR states, is highly dependent on the doping level. Additionally, topological edge states may have a substantial impact on the YSR states, leading to a decrease in YSR state energies and the creation of new states when the magnetic impurity approaches the boundary.
12 pages, 7 figures
References in corpus (17)
- Topological Insulators with Inversion Symmetry
- Discovery (theoretical prediction and experimental observation) of a large-gap topological-insulator class with spin-polarized single-Dirac-cone on the surface
- Observation of Majorana Fermions in Ferromagnetic Atomic Chains on a Superconductor
- Zero-energy vortex bound state in the superconducting topological surface state of Fe(Se,Te)
- Observation of a Robust Zero-energy Bound State in Iron-based Superconductor Fe(Te,Se)
- Orbital Picture of Yu-Shiba-Rusinov Multiplets
- Topological Yu-Shiba-Rusinov chain from spin-orbit coupling
- RKKY Interaction On Surfaces of Topological Insulators With Superconducting Proximity Effect
- Impurity-induced bound states in superconductors with spin-orbit coupling
- Yu-Shiba-Rusinov states in real metals
- Competing Vortex Topologies in Iron-based Superconductors
- Yu-Shiba-Rusinov States and Ordering of Magnetic Impurities Near the Boundary of a Superconducting Nanowire
- Yu-Shiba-Rusinov states in a superconductor with topological Z2 bands
- Anomalous Shiba states in topological iron-based superconductors
- Bound states around impurities in a superconducting bilayer
- Surface orbital order and chemical potential inhomogeneity of the iron-based superconductor FeTe0.55Se0.45 investigated with special STM tips
- Topological Quantum Phase Transitions in Metallic Shiba Lattices