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Showing 1–4 of 4 results
Advanced filters: Author: "Bitan Roy" Clear advanced filters

  • When topological materials interact with the environment a phenomenon known as the non-Hermitian skin effect is observed, typically at outer interfaces of crystals. The authors combine self-similar fractal geometries for the tight binding models and non-Hermitian physics to showcase intertwining of topology and skin effect at the inner boundaries of periodic fractal lattices.

    • Sourav Manna
    • Bitan Roy
    ResearchOpen Access
    Communications Physics
    Volume: 6, P: 1-8

  • Authors introduce a new class of topological materials, namely projected topological branes that are holographic images of higher-dimensional topological crystals, and feature either emergent crystalline or aperiodic quasicrystalline order. They manifest bulk-boundary and bulk-lattice defect correspondences of parent crystals and open a realistic route to harness four and higher-dimensional topological crystals in three-dimensional world.

    • Archisman Panigrahi
    • Vladimir Juričić
    • Bitan Roy
    ResearchOpen Access
    Communications Physics
    Volume: 5, P: 1-9

  • Subject to a periodic drive, quantum materials can develop nontrivial bulk topological state, termed a Floquet topological insulator, which differs from its static counterpart due to the nontrivial role played by the time dimension. Here, the authors theoretically demonstrate that such dynamic topology can be probed by bulk dislocation lattice defects, realizable in state-of-the-art experiments in quantum crystals, cold atomic systems and various metamaterials.

    • Tanay Nag
    • Bitan Roy
    ResearchOpen Access
    Communications Physics
    Volume: 4, P: 1-8