10 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 therm…
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 s…