63 citations · 100 across the 8 of their papers we have counts for
8 papers
Quantum oscillation spectroscopy of Fermi-surface topologies in tetralayer graphene
Abhijit Halder, Harsh Varshney, Snehamoyee Hazra +7
Quantum oscillations offer a direct probe of Fermi-surface topology and electronic degeneracy, yet disentangling both simultaneously across the Lifshitz transitions of multiband sy…
Detecting Lifshitz Transitions Using Nonlinear Conductivity in Bilayer Graphene
Tanweer Ahmed, Harsh Varshney, Bao Q. Tu +6
The second-order nonlinear electrical response (NLER) is an intrinsic property of inversion symmetry-broken systems which can provide deep insights into the electronic band structu…
Planar Nernst effect from hidden band geometry in layered two-dimensional materials
Rahul Biswas, Harsh Varshney, Amit Agarwal
The Nernst effect is a versatile phenomenon relevant for energy harvesting, magnetic sensing, probing band topology and charge-neutral excitations. The planar Nernst effect (PNE) g…
Quantum geometric moment encodes stacking order of moiré matter
Surat Layek, Subhajit Sinha, Atasi Chakraborty +6
Exploring the topological characteristics of electronic bands is essential in condensed matter physics. Moiré materials featuring flat bands provide a versatile platform for engine…
Intrinsic nonlinear Nernst and Seebeck effect
Harsh Varshney, Amit Agarwal
The Nernst and Seebeck effects are crucial for thermoelectric energy harvesting. However, the linear anomalous Nernst effect requires magnetic materials with intrinsically broken t…
Phonon-Assisted Photoluminescence and Exciton Recombination in Monolayer Aluminum Nitride
Pushpendra Yadav, Amit Agarwal, Sitangshu Bhattacharya
Efficient solid-state photon emitters with longer operating lifetimes in the ultraviolet (UV) wavelength range are crucial for optoelectronic devices. However, finding suitable mat…
Nonlinear electrical transport unveils Fermi surface malleability in a moiré heterostructure
Suvronil Datta, Saisab Bhowmik, Harsh Varshney +4
Van Hove singularities enhance many-body interactions and induce collective states of matter ranging from superconductivity to magnetism. In magic-angle twisted bilayer graphene, v…
Tunable moiré materials for probing Berry physics and topology
Pratap Chandra Adak, Subhajit Sinha, Amit Agarwal +1
Berry curvature physics and quantum geometric effects have been instrumental in advancing topological condensed matter physics in recent decades. Although Landau level-based flat b…