Tootfinder

Hidden collective oscillations in a disordered mean-field spin model with non-reciprocal interactions
Laura Guislain, Eric Bertin
https://arxiv.org/abs/2406.03874

Hidden collective oscillations in a disordered mean-field spin model with non-reciprocal interactions
We study the effect of introducing separable quenched disorder on a non-equilibrium mean-field spin model exhibiting a phase transition to an oscillating state in the absence of disorder, due to non-reciprocal interactions. In the disordered model, the magnetisation and its time derivative no longer carry the signature of the phase transition to an oscillating state. However, thanks to the separable (Mattis-type) form of the disorder, the presence of oscillations can be revealed by introducing …

Tunable huge asymmetric transmission in mid-infrared range through a monolayer graphene chiral metasurface
Qi Wang, Haotian Hao, Wei Xin
https://arxiv.org/abs/2406.05379

Tunable huge asymmetric transmission in mid-infrared range through a monolayer graphene chiral metasurface
Metasurface has witnessed an urgent need for reconfigurable chiral manipulation recently, while the graphene-based devices attracted significant attention from researchers due to their inherent tunable properties. Here, an L-shaped metasurface composed of three hollow monolayer graphene resonant rings is proposed. A huge dual-frequency asymmetric transmission (AT) in the mid-infrared band (7800 nm-9000 nm) with transmission efficiency peaks of 0.14 and 0.26 is revealed, which is optimal of its …