4 papers
Topological random alloy
Subrata Pachhal, Aziz Hasan, Adhip Agarwala
Topological phases of matter are often realized in crystalline materials. To extend their understanding beyond perfect stoichiometry, we introduce a minimal model of a topological…
Diffusive metal in a percolating Chern insulator
Subrata Pachhal, Naba P. Nayak, Soumya Bera +1
Two-dimensional non-interacting fermions without any anti-unitary symmetries generically get Anderson localized in the presence of disorder. In contrast, topological superconductor…
Symmetry-protected topological wire in a topological vacuum
Subrata Pachhal, Adhip Agarwala
Symmetry-protected topological phases host gapless modes at their boundary with a featureless environment of the same dimension or a trivial vacuum. In this study, we explore their…
Signatures of emergent surface states across a displacive topological phase transition in BiI
Deep Singha Roy, Sk Kalimuddin, Subrata Pachhal +13
Topological phase transitions involving crystalline symmetry breaking provide a fertile ground to explore the interplay between symmetry, topology, and emergent quantum phenomena.…