307 citations · 1.2k across the 19 of their papers we have counts for
19 papers
Continuous correlated states and dual-flatness in a moiré heterostructure
Mohammed M. Al Ezzi, Na Xin, Yanmeng Shi +13
Many-body effects in condensed matter yield novel quantum states when the electronic density of states is enhanced. A vivid example is flat bands, which suppress kinetic energy and…
Polymer-free van der Waals assembly of 2D material heterostructures using muscovite crystals
Ian Babich, Timofey M. Savilov, Natalia A. Mamchik +14
The advent of van der Waals (vdW) heterostructures has enabled formation of bespoke materials with atomic precision, where numerous quantum and topological phenomena have already b…
Proximity screening greatly enhances electronic quality of graphene
Daniil Domaretskiy, Zefei Wu, Van Huy Nguyen +17
The electronic quality of two-dimensional systems is crucial when exploring quantum transport phenomena. In semiconductor heterostructures, decades of optimization have yielded rec…
Coulomb screening of superconductivity in magic-angle twisted bilayer graphene
Julien Barrier, Liangtao Peng, Shuigang Xu +7
The origin of superconductivity in magic-angle twisted bilayer graphene has been a subject of intense debate. While some experimental evidence indicated an unconventional pairing m…
Extreme electron-hole drag and negative mobility in the Dirac plasma of graphene
L. A. Ponomarenko, Alessandro Principi, A. D. Niblett +13
Coulomb drag between adjacent electron and hole gases has attracted considerable attention, being studied in various two-dimensional systems, including semiconductor and graphene h…
One-dimensional proximity superconductivity in the quantum Hall regime
Julien Barrier, Minsoo Kim, Roshan Krishna Kumar +16
Extensive efforts have been undertaken to combine superconductivity and the quantum Hall effect so that Cooper-pair transport between superconducting electrodes in Josephson juncti…
Scanning SQUID-on-tip microscope in a top-loading cryogen-free dilution refrigerator
Haibiao Zhou, Nadav Auerbach, Indranil Roy +12
The scanning superconducting quantum interference device (SQUID) fabricated on the tip of a sharp quartz pipette (SQUID-on-tip) has emerged as a versatile tool for nanoscale imagin…
Giant magnetoresistance of Dirac plasma in high-mobility graphene
Na Xin, James Lourembam, P. Kumaravadivel +12
The most recognizable feature of graphene's electronic spectrum is its Dirac point around which interesting phenomena tend to cluster. At low temperatures, the intrinsic behavior i…
On the origin of Abrikosov's quantum linear magnetoresistance
Alexander Kazantsev, Alexey Berdyugin, Andre Geim +1
Compensated semimetals with Weyl spectra are predicted to exhibit unsaturated linear growth of their resistivity in quantizing magnetic fields. This so-called quantum linear magnet…
Out-of-equilibrium criticalities in graphene superlattices
Alexey I. Berdyugin, Na Xin, Haoyang Gao +19
In thermodynamic equilibrium, current in metallic systems is carried by electronic states near the Fermi energy whereas the filled bands underneath contribute little to conduction.…
Magnetization signature of topological surface states in a non-symmorphic superconductor
Wenjun Kuang, Guillermo Lopez-Polin, Hyungjun Lee +10
Superconductors with nontrivial band structure topology represent a class of materials with unconventional and potentially useful properties. Recent years have seen much success in…
Long-range ballistic transport of Brown-Zak fermions in graphene superlattices
Julien Barrier, Piranavan Kumaravadivel, Roshan Krishna-Kumar +16
In quantizing magnetic fields, graphene superlattices exhibit a complex fractal spectrum often referred to as the Hofstadter butterfly. It can be viewed as a collection of Landau l…
Out-of-plane dielectric susceptibility of graphene in twistronic and Bernal bilayers
Sergey Slizovskiy, Aitor Garcia-Ruiz, Alexey I. Berdyugin +6
We describe how the out-of-plane dielectric polarizability of monolayer graphene influences the electrostatics of bilayer graphene -- both Bernal (BLG) and twisted (tBLG). We compa…
Control of electron-electron interaction in graphene by proximity screening
M. Kim, S. G. Xu, A. I. Berdyugin +14
Electron-electron interactions play a critical role in many condensed matter phenomena, and it is tempting to find a way to control them by changing the interactions' strength. One…
Minibands in twisted bilayer graphene probed by magnetic focusing
A. I. Berdyugin, B. Tsim, P. Kumaravadivel +9
Magnetic fields force ballistic electrons injected from a narrow contact to move along skipping orbits and form caustics. This leads to pronounced resistance peaks at nearby voltag…
Giant oscillations in a triangular network of one-dimensional states in marginally twisted graphene
S. G. Xu, A. I. Berdyugin, P. Kumaravadivel +12
The electronic properties of graphene superlattices have attracted intense interest that was further stimulated by the recent observation of novel many-body states at "magic" angle…
Micromagnetometry of two-dimensional ferromagnets
M. Kim, P. Kumaravadivel, J. Birkbeck +14
The study of atomically thin ferromagnetic crystals has led to the discovery of unusual magnetic behaviour and provided insight into the magnetic properties of bulk materials. Howe…
Measuring Hall Viscosity of Graphene's Electron Fluid
A. I. Berdyugin, S. G. Xu, F. M. D. Pellegrino +10
Materials subjected to a magnetic field exhibit the Hall effect, a phenomenon studied and understood in fine detail. Here we report a qualitative breach of this classical behavior…
Fluidity Onset in Graphene
Denis A. Bandurin, Andrey V. Shytov, Leonid Levitov +6
Viscous electron fluids have emerged recently as a new paradigm of strongly-correlated electron transport in solids. Here we report on a direct observation of the transition to thi…