67 citations · 87 across the 9 of their papers we have counts for
6 papers · 1 filter
Refraction-induced transverse charge transport
Ronika Sarkar, Arka Bandyopadhyay, Awadhesh Narayan +1
We introduce a mechanism that produces a Hall-like transverse response in time-reversal-invariant materials, driven entirely by geometric effects. Specifically, we demonstrate that…
Chiral damping with persistent edge states: interplay of spectral topology and band topology in open quantum systems
Ronika Sarkar, Suraj S. Hegde, Awadhesh Narayan +1
We study the dynamical consequences of combining the non-Hermitian skin effect with topological edge states. Focusing on the paradigmatic dissipative Hofstadter model, we find that…
Non-Hermitian Topology and Flat Bands via an Exact Real Space Decimation Scheme
Ayan Banerjee, Arka Bandyopadhyay, Ronika Sarkar +1
In recent years, non-Hermitian phases in classical and quantum systems have garnered significant attention. In particular, their intriguing band geometry offers a platform for expl…
Emergence of two-fold non-Hermitian spectral topology through synthetic spin engineering
Ronika Sarkar, Ayan Banerjee, Awadhesh Narayan
The union of topology and non-Hermiticity has led to the unveiling of many intriguing phenomena. We introduce a synthetic spin-engineered model belonging to symmetry class AI, whic…
Non-Hermitian Topological Phases: Principles and Prospects
Ayan Banerjee, Ronika Sarkar, Soumi Dey +1
The synergy between non-Hermitian concepts and topological ideas have led to very fruitful activity in the recent years. Their interplay has resulted in a wide variety of new non-H…
Interplay of Disorder and Point-Gap Topology: Chiral Modes, Localization and Non-Hermitian Anderson Skin Effect in One Dimension
Ronika Sarkar, Suraj S. Hegde, Awadhesh Narayan
Symmetry-protected spectral topology in non-Hermitian systems has interesting manifestations such as dynamically anomalous chiral currents and skin effect. We study the interplay b…