59 citations · 115 across the 15 of their papers we have counts for
10 papers · 1 filter
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…
Tailoring higher-order van Hove singularities in non-Hermitian interface systems via Floquet engineering
Ayan Banerjee, Debashree Chowdhury, Awadhesh Narayan
We propose a non-Hermitian (NH) interface system formed between two NH nodal line semimetals driven by optical fields as a platform for generation and tailoring of higher-order van…
Nonlinear Hall effect in Rashba systems with hexagonal warping
Soumadeep Saha, Awadhesh Narayan
Rashba spin-orbit coupled systems are an important class of materials noted for diverse fundamental and applied phenomena. Recently, the emergence of non-linear Hall effect under c…
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…
Uncovering Exceptional Contours in non-Hermitian Hyperbolic Matter
Nisarg Chadha, Awadhesh Narayan
Hyperbolic lattices are starting to be explored in search of novel phases of matter. At the same time, non-Hermitian physics has come to the forefront in photonic, optical, phononi…
Characterizing Exceptional Points Using Neural Networks
Md. Afsar Reja, Awadhesh Narayan
One of the key features of non-Hermitian systems is the occurrence of exceptional points (EPs), spectral degeneracies where the eigenvalues and eigenvectors merge. In this work, we…