427 citations · 1.5k across the 18 of their papers we have counts for
14 papers · 1 filter
Quantized Transport through a Supermoiré Chern Mosaic
Li-Qiao Xia, Aviram Uri, Zachary W. Gomez +8
Magic-angle helical trilayer graphene---three graphene layers sequentially twisted in the same direction by ---relaxes into a mosaic of domains that, at zero field,…
Electrically controllable valence-conduction band reversals in helical trilayer graphene
Matan Bocarsly, Indranil Roy, Weifeng Zhi +11
In moiré graphene systems, electronic interactions lift spin and valley degeneracies, leading to symmetry-broken ground states. In helical trilayer graphene (HTG), we uncover a dis…
Magic continuum in multi-moiré twisted trilayer graphene
Li-Qiao Xia, Aviram Uri, Jiaojie Yan +10
Moiré lattices provide a highly tunable platform for exploring the interplay between electronic correlations and band topology. Introducing a second moiré pattern extends this para…
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…
Helical trilayer graphene: a moiré platform for strongly-interacting topological bands
Li-Qiao Xia, Sergio C. de la Barrera, Aviram Uri +9
Quantum geometry of electronic wavefunctions results in fascinating topological phenomena. A prominent example is the intrinsic anomalous Hall effect (AHE) in which a Hall voltage…
Superconductivity and strong interactions in a tunable moiré quasiperiodic crystal
Aviram Uri, Sergio C. de la Barrera, Mallika T. Randeria +10
Electronic states in quasiperiodic crystals generally preclude a Bloch description, rendering them simultaneously fascinating and enigmatic. Owing to their complexity and relative…
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…
SQUID-on-tip with single-electron spin sensitivity for high-field and ultra-low temperature nanomagnetic imaging
Y. Anahory, H. R. Naren, E. O. Lachman +8
Scanning nanoscale superconducting quantum interference devices (nanoSQUIDs) are of growing interest for highly sensitive quantitative imaging of magnetic, spintronic, and transpor…
Sputtered MoRe SQUID-on-tip for high-field magnetic and thermal nanoimaging
Kousik Bagani, Jayanta Sarkar, Aviram Uri +4
Scanning nanoscale superconducting quantum interference devices (SQUIDs) are gaining interest as highly sensitive microscopic magnetic and thermal characterization tools of quantum…
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…
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…
Observation of superparamagnetism in coexistence with quantum anomalous Hall C=1 and C=0 Chern states
E. O. Lachman, M. Mogi, J. Sarkar +9
Simultaneous transport and scanning nanoSQUID-on-tip magnetic imaging studies in Cr-(Bi,Sb)Te modulation-doped films reveal the presence of superparamagnetic order within t…
Imaging resonant dissipation from individual atomic defects in graphene
Dorri Halbertal, Moshe Ben Shalom, Aviram Uri +8
Conversion of electric current into heat involves microscopic processes that operate on nanometer length-scales and release minute amounts of power. While central to our understand…
Nanoscale thermal imaging of dissipation in quantum systems
Dorri Halbertal, Jo Cuppens, Moshe Ben Shalom +12
Energy dissipation is a fundamental process governing the dynamics of physical, chemical, and biological systems. It is also one of the main characteristics distinguishing quantum…