activity
20182025
most citedHybrid higher-order skin-topological modes in non-reciprocal systems

492 citations · 957 across the 12 of their papers we have counts for

collaborators

12 papers

cond-mat.mes-hall2025

Topolectrical circuits recent experimental advances and developments

Haydar Sahin, Mansoor B. A. Jalil, Ching Hua Lee

Metamaterials serve as versatile platforms for demonstrating condensed matter physics and non-equilibrium phenomena, with electrical circuits emerging as a particularly compelling…

cond-mat.mtrl-sci2022

2D Janus Niobium Oxydihalide NbO: Multifunctional High-Mobility Piezoelectric Semiconductor for Electronics, Photonics and Sustainable Energy Applications

Tong Su, Ching Hua Lee, San-Dong Guo +5

Two-dimensional (2D) niobium oxydihalide NbOI has been recently demonstrated as an excellent in-plane piezoelectric and nonlinear optical materials. Here we show that Janus nio…

cond-mat.mes-hall2022★ 48 cited

Zoology of non-Hermitian spectra and their graph topology

Tommy Tai, Ching Hua Lee

We uncover the very rich graph topology of generic bounded non-Hermitian spectra, distinct from the topology of conventional band invariants and complex spectral winding. The graph…

physics.optics2022★ 1 cited

Port Reconfigurable Phase-Change Optical Resonator

Haiyu Meng, Lingling Wang, Ziran Liu +3

Active control and manipulation of electromagnetic waves are highly desirable for advanced photonic device technology, such as optical cloaking, active camouflage and information p…

cond-mat.mes-hall2021★ 2 cited

Critical hybridization of skin modes in coupled non-Hermitian chains

S M Rafi-Ul-Islam, Zhuo Bin Siu, Haydar Sahin +2

Non-Hermitian topological systems exhibit a plethora of unusual topological phenomena that are absent in the Hermitian systems. One of these key features is the extreme eigenstate…

cond-mat.mes-hall2021★ 3 cited

Unconventional node voltage accumulation in generalized topolectrical circuits with multiple asymmetric couplings

S M Rafi-Ul-Islam, Zhuo Bin Siu, Haydar Sahin +2

A non-Hermitian system is characterized by the violation of energy conservation. As a result of unbalanced gain or loss in the forward and backward directions due to non-reciprocal…