Synthetic gauge fields and non-Hermitian skin effects are central to topological phases and non-Hermitian physics,and each has recently attracted considerable interest across diverse research areas.Realizing skin effe...Synthetic gauge fields and non-Hermitian skin effects are central to topological phases and non-Hermitian physics,and each has recently attracted considerable interest across diverse research areas.Realizing skin effects typically requires asymmetric coupling or on-site gain and loss.Here,we theoretically and experimentally show that,under gauge fields,symmetry dissipative couplings can generate a nonreciprocal skin effect with a pseudospin degree of freedom and helical transport,which we term the“helical pseudospin skin effect”.展开更多
基金supported by the National Key Research and Development Program of China(Grant No.2022YFA1404201)the National Natural Science Foundation of China(NSFC)(Grant Nos.12474361,12034012,and 12074234)+4 种基金the Changjiang Scholars and Innovative Research Team in the University of Ministry of Education of China(PCSIRT)(IRT 17R70)the Fund for Shanxi 1331 Project Key Subjects Constructionthe 111 Project(D18001)the Fundamental Research Program of Shanxi Province(Grant No.202303021223005)the support from the China Association for Science and Technology(CAST),China。
文摘Synthetic gauge fields and non-Hermitian skin effects are central to topological phases and non-Hermitian physics,and each has recently attracted considerable interest across diverse research areas.Realizing skin effects typically requires asymmetric coupling or on-site gain and loss.Here,we theoretically and experimentally show that,under gauge fields,symmetry dissipative couplings can generate a nonreciprocal skin effect with a pseudospin degree of freedom and helical transport,which we term the“helical pseudospin skin effect”.
