477 citations · 2k across the 26 of their papers we have counts for
9 papers · 1 filter
Universal competitive spectral scaling from the critical non-Hermitian skin effect
Fang Qin, Ye Ma, Ruizhe Shen +1
Recently, it was discovered that certain non-Hermitian systems can exhibit qualitative different properties at different system sizes, such as being gapless at small sizes and havi…
Light-induced phase crossovers in a quantum spin Hall system
Fang Qin, Ching Hua Lee, Rui Chen
In this work, we theoretically investigate the light-induced topological phases and finite-size crossovers in a paradigmatic quantum spin Hall (QSH) system with high-frequency pump…
Dimensional transmutation from non-Hermiticity
Hui Jiang, Ching Hua Lee
Dimensionality plays a fundamental role in the classification of novel phases and their responses. In generic lattices of 2D and beyond, however, we found that non-Hermitian coupli…
Hyperbolic fringe signal for twin impurity quasiparticle interference
Peize Ding, Tilman Schwemmer, Ching Hua Lee +2
We study the quasiparticle interference (QPI) pattern emanating from a pair of adjacent impurities on the surface of a gapped superconductor (SC). We find that hyperbolic fringes (…
Observation of cnoidal wave localization in non-linear topolectric circuits
Hendrik Hohmann, Tobias Hofmann, Tobias Helbig +12
We observe a localized cnoidal (LCn) state in an electric circuit network. Its formation derives from the interplay of non-linearity and the topology inherent to a Su-Schrieffer-He…
Experimental identification of the second-order non-Hermitian skin effect with physics-graph-informed machine learning
Ce Shang, Shuo Liu, Ruiwen Shao +11
Topological phases of matter are conventionally characterized by the bulk-boundary correspondence in Hermitian systems: The topological invariant of the bulk in dimensions corr…
Real Non-Hermitian Energy Spectra Without Any Symmetry
Boxue Zhang, Qingya Li, Xiao Zhang +1
Non-Hermitian models with real eigenenergies are highly desirable for their stability. Yet, most of the currently known ones are constrained by symmetries such as PT-symmetry, whic…
Non-Hermitian Squeezed Polarons
Fang Qin, Ruizhe Shen, Ching Hua Lee
Recent experimental breakthroughs in non-Hermitian ultracold atomic lattices have dangled tantalizing prospects in realizing exotic, hitherto unreported, many-body non-Hermitian qu…
Diagnosis of pairing symmetry by vortex and edge spectra in kagome superconductors
Peize Ding, Ching Hua Lee, Xianxin Wu +1
Layered kagome metals AV3Sb5 (A=K, Rb, Cs) exhibit diverse correlated electron phenomena. It includes charge density wave formation and superconductivity the pairing symmetry of wh…