论文标题
观察非尺寸依赖尺寸的边界效应
Observation of size-dependent boundary effects in non-Hermitian electric circuits
论文作者
论文摘要
具有非铁皮皮肤效应（NHSE）的非热系统对施加的边界条件和晶格尺寸非常敏感，这会导致依赖大小的非铁皮皮肤效应。在这里，我们报告了基于电路平台的单向跳跃模型中对NHSE的实验观察和不同的晶格大小。电路接收光谱和相应的本征态对边界的存在非常敏感。同时，我们的实验结果表明了晶格的大小和边界项如何共同影响NHSE的强度。因此，我们的电路提供了一个很好的平台，可以观察到非富米系统中的尺寸依赖性边界效应。
The non-Hermitian systems with the non-Hermitian skin effect (NHSE) are very sensitive to the imposed boundary conditions and lattice size, which leads to size-dependent non-Hermitian skin effects. Here, we report the experimental observation of NHSE with different boundary conditions and different lattice size in a unidirectional hopping model based on a circuit platform. The circuit admittance spectra and corresponding eigenstates are very sensitive to the presence of the boundary. Meanwhile, our experimental results show how the lattice size and boundary terms together affect the strength of NHSE. Therefore, our electric circuit provides a good platform to observe size-dependent boundary effects in non-Hermitian systems.
