Klein tunneling is associated with particle-antiparticle pair production across a potential barrier but observing the phenomenon experimentally is challenging. Using analytical and numerical simulations, the authors show how magnetic damping allows for the breakdown of magnonic vacuum and for the creation of particle-antiparticle pairs in non-Hermitian antiferromagnets in strong magnetic fields, which has relevance for chirality-dependent magnonic computing.
- Shaohua Yuan
- Chaowei Sui
- Chenglong Jia
