Inverse proximity effect in -wave and -wave superconductors coupled to topological insulators

HG Hugdal, M Amundsen, J Linder, A Sudbø - Physical Review B, 2019 - APS
We study the inverse proximity effect in a bilayer consisting of a thin s-or d-wave
superconductor (S) and a topological insulator (TI). Integrating out the topological fermions …

Magnetization dynamics and Peierls instability in topological Josephson structures

A Reich, E Berg, J Schmalian, A Shnirman - Physical Review B, 2023 - APS
We study a long topological Josephson junction with a ferromagnetic strip between two
superconductors. The low-energy theory exhibits a nonlocal in time and space interaction …

Dominant superconducting correlations in a Luttinger liquid induced by spin fluctuations

NH Aase, A Sudbø - Physical Review B, 2022 - APS
We study spin-fluctuation mediated divergent superconducting fluctuations in a Luttinger
liquid proximity-coupled to a spin chain. Our study provides insight into how spin fluctuations …

Berezinskii-Kosterlitz-Thouless transitions in a topological superconductor-ferromagnet-superconductor junction

A Reich, DS Shapiro, A Shnirman - arXiv preprint arXiv:2410.22514, 2024 - arxiv.org
We study quantum phase transitions in a long and narrow topological Josephson junction.
The low-energy excitations comprise Majorana fermions propagating along the junction …

Mass-like gap creation by mixed singlet and triplet state in superconducting topological insulator

M Khezerlou, H Goudarzi - arXiv preprint arXiv:1903.01144, 2019 - arxiv.org
We investigate proximity-induced mixed spin-singlet and spin-triplet superconducting state
on the surface states of a topological insulator. Such hybrid structure features fundamentally …

Mass-like band-gap creation in superconducting topological insulator due to mixed singlet and triplet states

M Khezerlou, H Goudarzi - Journal of Physics: Condensed …, 2019 - iopscience.iop.org
We investigate proximity-induced mixed spin-singlet and spin-triplet superconducting state
on the surface states of a topological insulator. Such hybrid structure features fundamentally …