226 citations · 729 across the 43 of their papers we have counts for
43 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…
Emergent topological phase from a one-dimensional network of defects
Rahul Singh, Ritajit Kundu, Arijit Kundu +1
Symmetry-protected topological phases of matter, characterized by non-trivial band topology, are spectrally gapped and show non-trivial boundary phenomena. Here, we show that scatt…
Emergence of a molecular quantum liquid in one dimension
Rajashri Parida, Biswajit Paul, Harish S. Adsule +4
We investigate the fate of a one-dimensional lattice superfluid formed by hard-core bosons, aka `atoms' (alternatively, a free spinless Fermi sea) subjected to nearest-neighbor att…
Topologically switchable transport in a bundled cable of wires
Nirnoy Basak, Ritajit Kundu, Basudeb Mondal +1
Advances in the next generation of mesoscopic electronics require an understanding of topological phases in inhomogeneous media and the principles that govern them. Motivated by th…
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…
Anyon Quasilocalization in a Quasicrystalline Toric Code
Soumya Sur, Mohammad Saad, Adhip Agarwala
An exactly solvable model of a quantum spin liquid on a quasicrystal, akin to Kitaev's honeycomb model, was introduced in Kim \textit{et al.}, \href{https://doi.org/10.1103/PhysRev…
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.…
Topological Phase Transition under Infinite Randomness
Saikat Mondal, Adhip Agarwala
In clean and weakly disordered systems, topological and trivial phases having a finite bulk energy gap can transit to each other via a quantum critical point. In presence of strong…
Tunable anyonic permeability across spin liquid junctions
Sayak Bhattacharjee, Soumya Sur, Adhip Agarwala
We introduce two classes of junctions in a toric code, a prototypical model of a quantum spin liquid, and study the nature of anyonic transport across them mediated…
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…
Interfacial Line Energy of a Topological Phase
Saikat Mondal, Adhip Agarwala
In interacting topological systems, Landau-like order parameters interplay with the band topology of fermions. The physics of domain formation in such systems can get significantly…
Tunable Topological Phases in Quantum Kirigamis
Rahul Singh, Adhip Agarwala
Advances in engineering mesoscopic quantum devices have led to new material platforms where electronic transport can be achieved on foldable structures. In this respect, we study q…
Pinned Ad-colloids Disfavors Nucleation in Colloidal Vapor Deposition
Noman Hanif Barbhuiya, Pritam K. Mohanty, Saikat Mondal +3
Crystallization through vapor deposition is ubiquitous, and is inevitably influenced by impurities, which often impact the local structure. Interestingly, the effect of immobilizin…
Entanglement signatures of a percolating quantum system
Subrata Pachhal, Adhip Agarwala
Entanglement measures have emerged as one of the versatile probes to diagnose quantum phases and their transitions. Universal features in them expand their applicability to a range…
Thermopower probing emergent local moments in magic-angle twisted bilayer graphene
Ayan Ghosh, Souvik Chakraborty, Ranit Dutta +7
Recent experiments on magic-angle twisted bilayer graphene (MATBLG) have revealed the formation of flatbands, suggesting that correlation effects are likely to dominate in this sys…
Quasicrystalline Spin Liquid
Sunghoon Kim, Mohammad Saad, Dan Mao +2
The interplay of electronic interactions and frustration in crystalline systems leads to a panoply of correlated phases, including exotic Mott insulators with non-trivial patterns…
Signatures of quantum phases in a dissipative system
Rohan Joshi, Saikat Mondal, Souvik Bandyopadhyay +2
Lindbladian formalism, as tuned to dissipative and open systems, has been all-pervasive to interpret non-equilibrium steady states of quantum many-body systems. We study the fate o…
Percolation Transition in a Topological Phase
Saikat Mondal, Subrata Pachhal, Adhip Agarwala
Transition out of a topological phase is typically characterized by discontinuous changes in topological invariants along with bulk gap closings. However, as a clean system is geom…
Symmetry-Enriched Criticality in a Coupled Spin-Ladder
Suman Mondal, Adhip Agarwala, Tapan Mishra +1
We study a one-dimensional ladder of two coupled XXZ spin chains and identify several distinct gapless symmetry-enriched critical phases. These have the same unbroken symmetries an…
Dimensional reduction of Kitaev spin liquid at quantum criticality
Shi Feng, Adhip Agarwala, Nandini Trivedi
We investigate the fate of the Kitaev spin liquid (KSL) under the influence of an external magnetic field in the [001] direction and upon tuning bond anisotropy of the Kitaev c…
Correlation-driven non-trivial phases in single bi-layer Kagome intermetallics
Aabhaas Vineet Mallik, Adhip Agarwala, Tanusri Saha-Dasgupta
Bi-layer Kagome compounds provide an exciting playground where the interplay of topology and strong correlations can give rise to exotic phases of matter. Motivated by recent first…
Spectral Form Factors of Topological Phases
Anurag Sarkar, Subrata Pachhal, Adhip Agarwala +1
Signatures of dynamical quantum phase transitions and chaos can be found in the time evolution of generalized partition functions such as spectral form factors (SFF) and Loschmidt…
Classical and quantum facilitated exclusion processes
Amit Kumar Chatterjee, Adhip Agarwala
We demonstrate exciting similarities between classical and quantum many body systems whose microscopic dynamics are composed of non-reciprocal three-site facilitated exclusion proc…
Anyon dynamics in field-driven phases of the anisotropic Kitaev model
Shi Feng, Adhip Agarwala, Subhro Bhattacharjee +1
The Kitaev model on a honeycomb lattice with bond-dependent Ising interactions offers an exactly solvable model of a quantum spin liquid (QSL) with gapped fluxes and gapless…