27 citations · 72 across the 5 of their papers we have counts for
5 papers
Spectral functions of the honeycomb lattice with both the Hubbard and long-range Coulomb Interactions
Ho-Kin Tang, Indra Yudhistira, Udvas Chattopadhyay +4
The absence of screening of the non-local Coulomb interaction in Dirac systems at charge neutrality leads to the breakdown of the Fermi liquid and divergence of the Fermi velocity.…
Controlled alignment of supermoiré lattice in double-aligned graphene heterostructures
Junxiong Hu, Junyou Tan, Mohammed M. Al Ezzi +12
The supermoiré lattice, built by stacking two moiré patterns, provides a platform for creating flat mini-bands and studying electron correlations. An ultimate challenge in assembli…
Mode Delocalization in Disordered Photonic Chern Insulator
Udvas Chattopadhyay, Sunil Mittal, Mohammad Hafezi +1
In disordered two dimensional Chern insulators, a single bulk extended mode is predicted to exist per band, up to a critical disorder strength; all the other bulk modes are localiz…
Fermi arc induced vortex structure in Weyl beam shifts
Udvas Chattopadhyay, Li-Kun Shi, Baile Zhang +2
In periodic media, despite the close relationship between geometrical effects in the bulk and topological surface states, the two are typically probed separately. We show that when…
Near-zero index magneto-optical medium realized with an unpaired Dirac point
Xin Zhou, Daniel Leykam, A. B. Khanikaev +1
We realize an unpaired Dirac cone at the center of the first Brillouin zone, using a gyromagnetic photonic crystal with broken square sub-lattice symmetry and broken time reversal…