Theoretical seminar | 27 November 2024

Axion is a hypothetical particle which was postulated to solve the strong CP-problem. The seminar will discuss the axion response into a antiferromagnetic metamaterial. This model consist of infinite layered media, which layers presented in the form of spin chains in a ferromagnetic order.

In our semi-classical model we consider a lattice of spins coupled through exchange interaction and precessing in the external field. In our semi-classical model we consider a lattice of spins coupled through exchange interaction and precessing in the external field

Main paper/arXiv, related to the seminar, and other references:

1. Shaposhnikov, L., Mazanov, M., Bobylev, D. A., Wilczek, F., & Gorlach, M. A. (2023). Emergent axion response in multilayered metamaterials. Physical Review B, 108(11), 115101.
2. Seidov, T. Z., Barredo-Alamilla, E., Bobylev, D. A., Shaposhnikov, L., Mazanov, M., & Gorlach, M. A. (2024). Dual origin of effective axion response. arXiv preprint arXiv:2407.20767.