3 papers
cond-mat.supr-con2025
Probing the flat-band limit of the superconducting proximity effect in Twisted Bilayer Graphene Josephson junctions
A. Diez-Carlon, J. Diez-Merida, P. Rout +13
While extensively studied in normal metals, semimetals and semiconductors, the superconducting (SC) proximity effect remains elusive in the emerging field of flat-band systems. In…
cond-mat.supr-con2024
Superconducting junctions with flat bands
P. Virtanen, R. P. S. Penttilä, P. Törmä +3
We analyze the properties of flat-band superconductor junctions that behave differently from ordinary junctions containing only metals with Fermi surfaces. In particular, we show h…
cond-mat.supr-con2024
Flat-band ratio and quantum metric in the superconductivity of modified Lieb lattices
Reko P. S. Penttilä, Kukka-Emilia Huhtinen, Päivi Törmä
Flat bands may offer a route to high critical temperatures of superconductivity. It has been predicted that the quantum geometry of the bands as well as the ratio of the number of…