175 citations · 468 across the 12 of their papers we have counts for
12 papers
Generalized Wigner crystallization in moiré materials
Bikash Padhi, R. Chitra, Philip W. Phillips
Recent experiments on the twisted transition metal dichalcogenide (TMD) material, , have observed insulating states at fractional occupancy of the moiré bands. Such…
Transport across twist angle domains in moiré graphene
Bikash Padhi, Apoorv Tiwari, Titus Neupert +1
Many of the experiments in twisted bilayer graphene (TBG) differ from each other in terms of the details of their phase diagrams. Few controllable aspects aside, this discrepancy i…
Visualizing 1D zigzag Wigner crystallization at domain walls in the Mott insulator TaS
Anuva Aishwarya, Sean Howard, Bikash Padhi +4
In a certain regime of low carrier densities and strong correlations, electrons can crystallize into a periodic arrangement of charge known as Wigner crystal. Such phases are parti…
Pressure-Induced Metal-Insulator Transition in Twisted Bi-layer Graphene
Bikash Padhi, Philip Phillips
Recent experiments [arXiv: 1808.07865] on twisted bilayer graphene (TBLG) show that under hydrostatic pressure, an insulating state at quarter-filling of the moiré superlattice (i.…
Conjecture on the Butterfly Velocity across a Quantum Phase Transition
Matteo Baggioli, Bikash Padhi, Philip W. Phillips +1
We study an anisotropic holographic bottom-up model displaying a quantum phase transition (QPT) between a topologically trivial insulator and a non-trivial Weyl semimetal phase. We…
Doped Twisted Bilayer Graphene near Magic Angles: Proximity to Wigner Crystallization not Mott Insulation
Bikash Padhi, Chandan Setty, Philip W. Phillips
We devise a model to explain why twisted bi-layer graphene (TBLG) exhibits insulating behavior when charges occupy a unit moiré cell, a feature attributed to Mottness, but…
Inequivalence of the zero-momentum Limits of Transverse and Longitudinal Dielectric Response in the Cuprates
Chandan Setty, Bikash Padhi, Kridsanaphong Limtragool +4
We address the question of the mismatch between the zero momentum limits of the transverse and longitudinal dielectric functions for a fixed direction of the driving field observed…
Log-rise of the Resistivity in the Holographic Kondo Model
Bikash Padhi, Apoorv Tiwari, Chandan Setty +1
We study a single-channel Kondo effect using a recently developed holographic large- technique. In order to obtain resistivity of this model, we introduce a probe field. The gra…
Cavity Optomechanics with Ultra Cold Atoms in Synthetic Abelian and Non-Abelian Gauge Field
Bikash Padhi, Sankalpa Ghosh
In this article we present a pedagogical discussion of some of the optomechanical properties of a high finesse cavity loaded with ultracold atoms in laser induced synthetic gauge f…
Modified spin-wave theory and spin liquid behavior of cold bosons on an inhomogeneous triangular lattice
Alessio Celi, Tobias Grass, Andrew J. Ferris +5
Ultracold bosons in a triangular lattice are a promising candidate for observing quantum spin liquid behavior. Here we investigate, for such system, the role of a harmonic trap giv…
Ultracold Spin-Orbit Coupled Bose-Einstein Condensate in a Cavity: Route to Magnetic Phases Through Cavity Transmission
Bikash Padhi, Sankalpa Ghosh
We study the spin orbit coupled ultra cold Bose-Einstein condensate placed in a single mode Fabry-Pérot cavity. The cavity introduces a quantum optical lattice potential which dyna…
Cavity optomechanics with synthetic Landau levels of ultra cold Fermi gas
Bikash Padhi, Sankalpa Ghosh
Ultra cold fermionic atoms placed in a synthetic magnetic field arrange themselves in Landau levels. We theoretically study the optomechanical interaction between the light field a…