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4 papers · 2 filters
Projected Topological Branes
Archisman Panigrahi, Vladimir Juricic, Bitan Roy
Nature harbors crystals of dimensionality () only up to three. Here we introduce the notion of \emph{projected topological branes} (PTBs): Lower-dimensional branes embedded in h…
Competing orders and cascade of degeneracy lifting in doped Bernal bilayer graphene
Andras Szabo, Bitan Roy
Motivated by recent experiments [H. Zhou, \emph{et al.}, Science {\bf 375}, 774 (2022) and S. C. de la Barrera, \emph{et al.}, arXiv:2110.13907], here we propose a general mechanis…
Higher-order topological phases on fractal lattices
Sourav Manna, Snehasish Nandy, Bitan Roy
Electronic materials harbor a plethora of exotic quantum phases, ranging from unconventional superconductors to non-Fermi liquids, and, more recently, topological phases of matter.…
Non-Hermitian dislocation modes: Stability and melting across exceptional points
Archisman Panigrahi, Roderich Moessner, Bitan Roy
The traditional bulk-boundary correspondence assuring robust gapless modes at the edges and surfaces of insulating and nodal topological materials gets masked in non-Hermitian (NH)…