18 citations · 35 across the 12 of their papers we have counts for
12 papers
Van Hove singularity-driven giant Nernst signal in twisted double bilayer graphene
Ujjal Roy, Monosij Roy, Unmesh Ghorai +8
Twisted graphene layers host van Hove singularities (vHSs), peaks in the electronic density of states, thought to drive exotic phases in moiré materials, but their effect on therma…
Motility destabilizes an absorbing-state flock
Narayan Dutt Sharma, Subroto Mukerjee, Chandan Dasgupta +1
Activity, when it takes the form of motility, is generally seen to promote order in many-body systems. Here we present a one-dimensional lattice model that, in the non-motile limit…
Quantized heat flow in moiré chern bands of bilayer graphene
Santanu Samai, Debangan Sarkar, Abhijit Halder +5
When electrons are subjected simultaneously to a magnetic field and a periodic potential, they form the fractal Hofstadter spectrum, whose topological gaps host quantum Hall and Ch…
Conservation laws and chaos propagation in a non-reciprocal classical magnet
Nisarg Bhatt, Purnendu Das, Subroto Mukerjee +1
We study a nonreciprocal generalization [EPL 60, 418 (2002)] of the classical Heisenberg spin chain, in which the exchange coupling is nonsymmetric, and show that it displays a bal…
Electron Hydrodynamics: Viscosity Tensor and effects of a Magnetic field
Anubhav Srivastava, Subroto Mukerjee
Transport due to electrons in ultra-clean two dimensional systems can be hydrodynamic in nature with the momentum of the electrons being conserved in the bulk. This hydrodynamic be…
Many-body critical phase in a quasiperiodic chain and dynamical Widom lines in Fock space properties
Nilanjan Roy, Subroto Mukerjee, Sumilan Banerjee
We study a quasiperiodic model in one dimension, namely the extended Aubry-André-Harper (EAAH) chain, that realizes a critical phase comprising entirely single-particle critical st…
Universality in quantum critical flow of charge and heat in ultra-clean graphene
Aniket Majumdar, Nisarg Chadha, Pritam Pal +6
Close to the Dirac point, graphene is expected to exist in quantum critical Dirac fluid state, where the flow of both charge and heat can be described with a dc electrical conducti…
Persistent currents in mesoscopic spin-orbit coupled rings due to an applied Zeeman field
Bijay Kumar Sahoo, Subroto Mukerjee, Abhiram Soori
Persistent currents (PCs) in mesoscopic rings have been a subject of intense investigation since their proposal by Büttiker, Landauer, and Imry in 1983. In this paper, we explore t…
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…
Emergent hydrodynamics in a non-reciprocal classical isotropic magnet
Nisarg Bhatt, Subroto Mukerjee, Sriram Ramaswamy
The Hamiltonian nature of the precessional dynamics of the classical Heisenberg model leads to reciprocal interactions amongst the spins. Heisenberg spins are reciprocal in nature.…
Vortical currents and reciprocal relations for transport coefficients in the electron hydrodynamic regime
Nisarg Chadha, Subroto Mukerjee
We investigate the hydrodynamic regime in metals with momentum-conserving electron-electron scattering. The conservation of momentum results in well-defined dynamics whose effects…
Possible formation of lowly luminous highly magnetized white dwarfs by accretion leading to SGRs/AXPs
B. Mukhopadhyay, M. Bhattacharya, A. R. Rao +2
We sketch a possible evolutionary scenario by which a highly magnetized super-Chandrasekhar white dwarf could be formed by accretion on to a commonly observed magnetized white dwar…