175 citations · 468 across the 12 of their papers we have counts for
5 papers · 1 filter
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…
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.…
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…