57 citations · 131 across the 10 of their papers we have counts for
9 papers · 1 filter
Bandwidth-Limited Critical Currents in Electrically Tunable Moiré Bands
Riccardo Bertini, Xueqiao Wang, Sergey Slizovskiy +16
Moiré superlattices host narrow minibands whose bandwidth governs correlated and topological phases. Here, we demonstrate that the bandwidth also sets the critical current for the…
Single-photon detection enabled by negative differential conductivity in moiré superlattices
Krystian Nowakowski, Hitesh Agarwal, Sergey Slizovskiy +19
Detecting individual light quanta is essential for quantum information, space exploration, advanced machine vision, and fundamental science. Here, we introduce a novel single photo…
In situ engineering hexagonal boron nitride in van der Waals heterostructures with selective SF6 etching
Hitesh Agarwal, Antoine Reserbat-Plantey, David Barcons Ruiz +10
Van der Waals heterostructures are at the forefront in materials heterostructure engineering, offering the ultimate control in layer selectivity and capability to combine virtually…
Terahertz photocurrent probe of quantum geometry and interactions in magic-angle twisted bilayer graphene
Roshan Krishna Kumar, Geng Li, Riccardo Bertini +24
Moiré materials represent strongly interacting electron systems bridging topological and correlated physics. Despite significant advances, decoding wavefunction properties underlyi…
Infrared Spectroscopy for Diagnosing Superlattice Minibands in Magic-angle Twisted Bilayer Graphene
Geng Li, Roshan Krishna Kumar, Petr Stepanov +11
Twisted bilayer graphene (TBG) represents a highly tunable, strongly correlated electron system owed to its unique flat electronic bands. However, understanding the single-particle…
Giant ultra-broadband photoconductivity in twisted graphene heterostructures
Hitesh Agarwal, Krystian Nowakowski, Andres Forrer +12
The requirements for broadband photodetection are becoming exceedingly demanding in hyperspectral imaging. Whilst intrinsic photoconductor arrays based on mercury cadmium telluride…
Ultraconfined plasmons in atomically thin crystalline silver nanostructures
Vahagn Mkhitaryan, Andrew P. Weber, Saad Abdullah +8
The ability to confine light down to atomic scales is critical for the development of applications in optoelectronics and optical sensing as well as for the exploration of nanoscal…
Cryogenic nano-imaging of second-order moiré superlattices
Niels C. H. Hesp, Sergi Batlle-Porro, Roshan Krishna Kumar +7
Second-order superlattices form when moiré superlattices of similar periodicities interfere with each other, leading to even larger superlattice periodicities. These crystalline st…
Landau level diagram and the continuous rotational symmetry breaking in trilayer graphene
Biswajit Datta, Hitesh Agarwal, Abhisek Samanta +5
The sequence of the zeroth Landau levels (LLs) between filling factors =-6 to 6 in ABA-stacked trilayer graphene (TLG) is unknown because it depends sensitively on the non-unifo…