AI 中文总结
研究非厄米蜂窝晶格中伪磁场与非厄米趋肤效应的相互作用，通过两种机制产生伪磁场，发现其能有效抑制趋肤效应，对边界不敏感，为控制非厄米趋肤效应提供通用有效手段，指出在多种人工平台的可行实现。
AI 中文摘要
非厄米趋肤效应（NHSE）的磁抑制为其控制提供了一条可行途径。虽然NHSE已在各种经典波平台中实现，但在此类系统中只能设计出保持时间反演对称性的伪磁场（PMF），其与NHSE的相互作用仍未得到充分探索。本文通过考虑产生PMF的两种不同机制，研究了非厄米蜂窝晶格中的这种相互作用。结果表明，在两种情况下，PMF都能通过将趋肤模式驱入体中来有效抑制NHSE，同时伴随着趋肤拓扑面积的减小和复能谱的收缩。该机制对边界细节不敏感，适用于各种边缘终端。结果表明PMF是控制NHSE的通用有效手段，并指出在包括光子和声子超材料以及拓扑电路在内的广泛人工平台中的可行实现。
英文摘要
Magnetic suppression of the non-Hermitian skin effect (NHSE) offers a viable route for its control. While the NHSE has been realized in various classical-wave platforms, only pseudomagnetic fields (PMFs), which preserve time-reversal symmetry, can be engineered in such systems; however, their interplay with the NHSE remains underexplored. Here, we investigate this interplay in a non-Hermitian honeycomb lattice by considering two distinct mechanisms for generating PMFs: monotonically increasing strain and spatially modulated gain and loss. We show that in both scenarios, PMFs can efficiently suppress the NHSE by driving skin modes into the bulk, accompanied by a reduction of the skin topological area and a contraction of the complex-energy spectrum under periodic boundary conditions. This mechanism is insensitive to boundary details and holds for various edge terminations, including zigzag, bearded, armchair, and twig edges. Our results establish PMFs as a versatile and effective means to control the NHSE, and point toward feasible implementations in a broad range of artificial platforms, including photonic and acoustic metamaterials as well as topolectrical circuits.
Comments16 pages, 11 figures
