23 citations · 101 across the 15 of their papers we have counts for
16 papers
Engineering non-ergodic properties in two dimensional quantum many-body systems
Nyayabanta Swain, Gabriel Lemarié, Shaffique Adam
Non-ergodic quantum many-body dynamics offers a route to persistent quantum coherence far from equilibrium, beyond the conventional expectations of thermalizing statistical mechani…
2D Anderson Localization and KPZ sub-Universality Classes : sensitivity to boundary conditions and insensitivity to symmetry classes
Nyayabanta Swain, Shaffique Adam, Gabriel Lemarié
We challenge two foundational principles of localization physics by analyzing conductance fluctuations in two dimensions with unprecedented precision: (i) the Thouless criterion, w…
Spin-hedgehog-derived electromagnetic effects in itinerant magnets
G. V. Paradezhenko, A. A. Pervishko, N. Swain +2
In itinerant magnets, the indirect exchange coupling of Ruderman-Kittel-Kasuya-Yosida type is known to stabilize incommensurate spin spiral. Whereas an account of higher order spin…
Atomic scale skyrmions and large topological Hall effect in a breathing-kagome lattice
Nyayabanta Swain, Munir Shahzad, Pinaki Sengupta
Motivated by recent experiments in GdRuAl, we demonstrate the emergence of atomic scale Skyrmions in interacting spins on a breathing kagome lattice with competing n…
A stabilization mechanism for many-body localization in two dimensions
D. C. W. Foo, N. Swain, P. Sengupta +2
Experiments in cold atom systems see almost identical signatures of many body localization (MBL) in both one-dimensional () and two-dimensional () systems despite the the…
Skyrmion-driven topological Hall effect in a Shastry-Sutherland magnet
N. Swain, M. Shahzad, G. V. Paradezhenko +3
The Shastry-Sutherland model and its generalizations have been shown to capture emergent complex magnetic properties from geometric frustration in several quasi-two-dimensional qua…
Engineering many-body quantum Hamiltonians with non-ergodic properties using quantum Monte Carlo
Nyayabanta Swain, Ho-Kin Tang, Darryl Chuan Wei Foo +5
We present a computational framework to identify Hamiltonians of interacting quantum many-body systems that host non-ergodic excited states. We combine quantum Monte Carlo simulati…
Transport and spectroscopic signatures of a disorder-stabilized metal in two-dimensional frustrated Mott insulators
Madhuparna Karmakar, Nyayabanta Swain
Frustrated Mott insulators such as transition metal dichalcogenides present an ideal platform for the experimental realization of externally tuned insulator-metal transition. In th…
Complex magnetic ordering and associated topological Hall effect in a two-dimensional metallic chiral magnet
Nyayabanta Swain, Munir Shahzad, Pinaki Sengupta
Motivated by recent experiments on the observation of room temperature skyrmions in a layered heterostructure and subsequent demonstration of topological Hall effect in the same sy…
Tailoring magnetic order via atomically stacking 3d/5d electrons
Ke Huang, Liang Wu, Maoyu Wang +18
The ability to tune magnetic orders, such as magnetic anisotropy and topological spin texture, is desired in order to achieve high-performance spintronic devices. A recent strategy…
Topological Hall effect in the Shastry-Sutherland lattice
Munir Shahzad, Nyayabanta Swain, Pinaki Sengupta
We study the classical Heisenberg model on the geometrically frustrated Shastry-Sutherland (SS) lattice with additional Dzyaloshinskii-Moriya (DM) interaction in the presence of an…
Strain induced superconductor-insulator transition on Lieb lattice
Nyayabanta Swain, Madhuparna Karmakar
We report the numerical investigation of strain induced superconductor-insulator quantum phase transition on a Lieb lattice. Based on a non perturbative Monte Carlo technique, we s…
Spin-orbital liquids and insulator-metal transitions on the pyrochlore lattice
Nyayabanta Swain, Madhuparna Karmakar, Pinaki Majumdar
The two orbital Hubbard model, with the electrons additionally coupled to a complex magnetic background, arises in the pyrochlore molybdates. The background involves local moments…
Magnetic Order and Mott Transition on the Checkerboard Lattice
Nyayabanta Swain, Pinaki Majumdar
The checkerboard lattice, with alternating 'crossed' plaquettes, serves as the two dimensional analog of the pyrochlore lattice. The corner sharing plaquette structure leads to a h…
Mott transition and anomalous resistive state in the pyrochlore molybdates
Nyayabanta Swain, Pinaki Majumdar
The rare-earth based pyrochlore molybdates involve orbitally degenerate electrons Hund's coupled to local moments. The large Hund's coupling promotes ferromagnetism, the superexcha…
Mott-Hubbard transition and spin-liquid state on the pyrochlore lattice
Nyayabanta Swain, Rajarshi Tiwari, Pinaki Majumdar
The pyrochlore lattice involves corner sharing tetrahedra and the resulting geometric frustration is believed to suppress any antiferromagnetic order for Mott insulators on this st…