“Surge in Power Transmission in Flat and Nearly Flat Band Lattices due to Instability of Nonlinearly Evanescent Waves”

https://pubmed.ncbi.nlm.nih.gov/38115488

The abstract describes the discovery of a surge in power transmission, known as supratransmission, in flat and nearly flat band lattices due to the instability of nonlinearly evanescent waves with the flat band frequency in the case of defocusing nonlinearity.