Emergence of two-fold non-Hermitian spectral topology through synthetic spin engineering

• Published in: New journal of physics Vol. 26; no. 6; pp. 63034 - 63053
• Main Authors: Sarkar, Ronika, Banerjee, Ayan, Narayan, Awadhesh
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.06.2024
• Subjects: Engineering; Non-Hermitian; Phase diagrams; Phase transitions; Physics; Skin effect; spectral topology; Symmetry; topoelectric circuit; topological phases; Topology

Abstract 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, which is a rare occurrence, and demonstrate the emergence of a multi-fold spectral topology. As an example of our p...