Publications (12)
Nanoscale imaging of equilibrium quantum Hall edge currents and of the magnetic monopole response in graphene
Aviram Uri, Youngwook Kim, Kousik Bagani +9
The recently predicted topological magnetoelectric effect and the response to an electric charge that mimics an induced mirror magnetic monopole are fundamental attributes of topol…
A Transfer Matrix Approach to Electron Transport in Graphene through Arbitrary Electric and Magnetic Potential Barriers
Sameer Grover, Sankalpa Ghosh, Manish Sharma
A transfer matrix method is presented for solving the scattering problem for the quasi one-dimensional massless Dirac equation applied to graphene in the presence of an arbitrary i…
Mapping the twist angle and unconventional Landau levels in magic angle graphene
Aviram Uri, Sameer Grover, Yuan Cao +10
The emergence of flat electronic bands and of the recently discovered strongly correlated and superconducting phases in twisted bilayer graphene crucially depends on the interlayer…
Limits on the Bolometric response of Graphene due to flicker noise
Sameer Grover, Sudipta Dubey, John P. Mathew +1
We study the photoresponse of graphene field effect transistors using scanning photocurrent microscopy in near and far field configurations, and we find that the response of graphe…
A facile process for soak-and-peel delamination of CVD graphene from substrates using water
Priti Gupta, Pratiksha D. Dongare, Sameer Grover +4
We demonstrate a simple technique to transfer CVD-grown graphene from copper and platinum substrates using a soak-and-peel delamination technique utilizing only hot deionized water…
Imaging Chern mosaic and Berry-curvature magnetism in magic-angle graphene
Sameer Grover, Matan Bocarsly, Aviram Uri +14
Charge carriers in magic angle graphene come in eight flavors described by a combination of their spin, valley, and sublattice polarizations. When the inversion and time reversal s…
Visualizing isospin magnetic texture and intervalley exchange interaction in rhombohedral tetralayer graphene
Nadav Auerbach, Surajit Dutta, Matan Uzan +13
The tunable band structure and nontrivial topology of multilayer rhombohedral graphene lead to a variety of correlated electronic states with isospin orders-meaning ordered states…
de Haas-van Alphen spectroscopy and fractional quantization of magnetic-breakdown orbits in moiré graphene
Matan Bocarsly, Matan Uzan, Indranil Roy +12
Quantum oscillations originating from the quantization of the electron cyclotron orbits provide ultrasensitive diagnostics of electron bands and interactions in novel materials. We…
Light matter interaction in WS nanotube-graphene hybrid devices
John P. Mathew, Gobinath Jegannathan, Sameer Grover +5
We study the light matter interaction in WS nanotube-graphene hybrid devices. Using scanning photocurrent microscopy we find that by engineering graphene electrodes for WS$_{…
Tunable Superlattice in Graphene To Control the Number of Dirac Points
Sudipta Dubey, Vibhor Singh, Ajay K. Bhat +6
Superlattice in graphene generates extra Dirac points in the band structure and their number depends on the superlattice potential strength. Here, we have created a lateral superla…
Abrupt p-n junction using ionic gating at zero-bias in bilayer graphene
Sameer Grover, Anupama Joshi, Ashwin Tulapurkar +1
Graphene is a promising candidate for optoelectronic applications. In this report, a double gated bilayer graphene FET has been made using a combination of electrostatic and electr…
Reversal of Klein reflection in bilayer graphene
Neetu Agrawal, Sameer Grover, Sankalpa Ghosh +1
Whereas massless Dirac fermions in monolayer graphene exhibit Klein tunneling when passing through a potential barrier upon normal incidence, such a barrier totally reflects massiv…