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72 papers
Exciton fine structure in twisted transition metal dichalcogenide heterostructures
Sudipta Kundu, Tomer Amit, H. R. Krishnamurthy +2
Moiré superlattices of transition metal dichalcogenide (TMD) heterostructures give rise to rich excitonic phenomena associated with the interlayer twist angle and induced changes i…
Atomic relaxation and flat bands in strain-engineered transition metal dichalcogenide bilayer moiré systems
Sudipta Kundu, Indrajit Maity, Robin Bajaj +2
Strain-induced lattice mismatch leads to moiré patterns in homobilayer transition metal dichalcogenides (TMDs). We investigate the structural and electronic properties of such stra…
Moiré induced topology and flat bands in twisted bilayer WSe: A first-principles study
Sudipta Kundu, Mit H. Naik, H. R. Krishnamurthy +1
We study the influence of strong spin-orbit interaction on the formation of flat bands in relaxed twisted bilayer WSe. Flat bands, well separated in energy, emerge at the band…
Unconventional superconductivity in a strongly correlated band-insulator without doping
Anwesha Chattopadhyay, H. R. Krishnamurthy, Arti Garg
We present a novel route for attaining unconventional superconductivity (SC) in a strongly correlated system without doping. In a simple model of a correlated band insulator (BI) a…
Excess entropy and breakdown of semiclassical description of thermoelectricity in twisted bilayer graphene close to half filling
Bhaskar Ghawri, Phanibhusan S. Mahapatra, Shinjan Mandal +9
In moiré systems with twisted bilayer graphene (tBLG), the amplification of Coulomb correlation effects at low twist angles () is a result of nearly flat low-energy electronic b…
Reconstruction of moiré lattices in twisted transition metal dichalcogenide bilayers
Indrajit Maity, Prabal K. Maiti, H. R. Krishnamurthy +1
An important step in understanding the exotic electronic, vibrational, and optical properties of the moiré lattices is the inclusion of the effects of structural relaxation of the…