Phase-Locking Diffusive Skin Effect

• 作者: Pei-Chao Cao Yu-Gui Peng Ying Li Xue-Feng Zhu
• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2022,（5）
• 所属期刊栏目: CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL MAGNETIC, AND OPTICAL PROPERTIES
• 页码范围: 155-160
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/0256-307X/39/5/057801

摘要

We explore the exceptional point(EP)induced phase transition and amplitude/phase modulation in thermal diffusion systems.We start from the asymmetric coupling double-channel model,where the temperature field is unbalanced in the amplitude and locked in the symmetric phase.By extending into the one-dimensional tight-binding non-Hermitian lattice,we study the convection-driven phase locking and the asymmetric-coupling-induced diffusive skin effect with the high-order EPs in static systems.Combining convection and asymmetric couplings,we further show the phase-locking diffusive skin effect.Our work reveals the mechanism of controlling both the amplitude and phase of temperature fields in thermal coupling systems and has potential applications in non-Hermitian topology in thermal diffusion.