490 citations · 2.2k across the 22 of their papers we have counts for
22 papers
Uncovering the spin ordering in magic-angle graphene via edge state equilibration
Jesse C. Hoke, Yifan Li, Julian May-Mann +5
Determining the symmetry breaking order of correlated quantum phases is essential for understanding the microscopic interactions in their host systems. The flat bands in magic angl…
Mapping twist-tuned multiband topology in bilayer WSe
Benjamin A. Foutty, Carlos R. Kometter, Trithep Devakul +5
Semiconductor moiré superlattices have been shown to host a wide array of interaction-driven ground states. However, twisted homobilayers have been difficult to study in the limit…
Hofstadter states and reentrant charge order in a semiconductor moiré lattice
Carlos R. Kometter, Jiachen Yu, Trithep Devakul +7
The emergence of moiré materials with flat bands provides a platform to systematically investigate and precisely control correlated electronic phases. Here, we report local electro…
1/4 is the new 1/2 when topology is intertwined with Mottness
Peizhi Mai, Jinchao Zhao, Benjamin E. Feldman +1
In non-interacting systems, bands from non-trivial topology emerge strictly at half-filling and exhibit either the quantum anomalous Hall or spin Hall effects. Here we show using d…
Topological Mott Insulator at Quarter Filling in the Interacting Haldane Model
Peizhi Mai, Benjamin E. Feldman, Philip W. Phillips
While the recent advances in topology have led to a classification scheme for electronic bands described by the standard theory of metals, a similar scheme has not emerged for stro…
Spin skyrmion gaps as signatures of strong-coupling insulators in magic-angle twisted bilayer graphene
Jiachen Yu, Benjamin A. Foutty, Yves H. Kwan +6
The flat electronic bands in magic-angle twisted bilayer graphene (MATBG) host a variety of correlated insulating ground states, many of which are predicted to support charged exci…
Tunable spin and valley excitations of correlated insulators in -valley moiré bands
Benjamin A. Foutty, Jiachen Yu, Trithep Devakul +6
Moiré superlattices formed from transition metal dichalcogenides (TMDs) have been shown to support a variety of quantum electronic phases that are highly tunable using applied elec…
Interaction-driven Spontaneous Ferromagnetic Insulating States with Odd Chern Numbers
Peizhi Mai, Edwin W. Huang, Jiachen Yu +2
Motivated by recent experimental work on moiré systems in a strong magnetic field, we compute the compressibility as well as the spin correlations and Hofstadter spectrum of spinfu…
Correlated Hofstadter Spectrum and Flavor Phase Diagram in Magic Angle Graphene
Jiachen Yu, Benjamin A. Foutty, Zhaoyu Han +8
In magic angle twisted bilayer graphene (MATBG), the moiré superlattice potential gives rise to narrow electronic bands1 which support a multitude of many-body quantum phases. Furt…
Interacting multi-channel topological boundary modes in a quantum Hall valley system
Mallika T. Randeria, Kartiek Agarwal, Benjamin E. Feldman +6
Symmetry and topology play key roles in the identification of phases of matter and their properties. Both concepts are central to understanding quantum Hall ferromagnets (QHFMs), t…
Ferroelectric quantum Hall phase revealed by visualizing Landau level wavefunction interference
Mallika T. Randeria, Benjamin E. Feldman, Fengcheng Wu +6
Novel broken symmetry states can spontaneously form due to Coulomb interactions in electronic systems with multiple internal degrees of freedom. Multi-valley materials offer an esp…
Visualizing Heavy Fermion Confinement and Pauli-Limited Superconductivity in Layered CeCoIn5
András Gyenis, Benjamin E. Feldman, Mallika T. Randeria +4
Layered material structures play a key role in enhancing electron-electron interactions to create correlated metallic phases that can transform into unconventional superconducting…
High-resolution studies of the Majorana atomic chain platform
Benjamin E. Feldman, Mallika T. Randeria, Jian Li +6
Ordered assemblies of magnetic atoms on the surface of conventional superconductors can be used to engineer topological superconducting phases and realize Majorana fermion quasipar…
Imaging electronic states on topological semimetals using scanning tunneling microscopy
Andras Gyenis, Hiroyuki Inoue, Sangjun Jeon +12
Following the intense studies on topological insulators, significant efforts have recently been devoted to the search for gapless topological systems. These materials not only broa…
Observation of a Nematic Quantum Hall Liquid on the Surface of Bismuth
Benjamin E. Feldman, Mallika T. Randeria, András Gyenis +5
Nematic quantum fluids with wavefunctions that break the underlying crystalline symmetry can form in interacting electronic systems. We examine the quantum Hall states that arise i…
Scanning Josephson spectroscopy on the atomic scale
Mallika T. Randeria, Benjamin E. Feldman, Ilya K. Drozdov +1
The Josephson effect provides a direct method to probe the strength of the pairing interaction in superconductors. By measuring the phase fluctuating Josephson current between a su…
Bulk crystal growth and electronic characterization of the 3D Dirac Semimetal Na3Bi
Satya K. Kushwaha, Jason W. Krizan, Benjamin E. Feldman +11
High quality hexagon plate-like Na3Bi crystals with large (001) plane surfaces were grown from a molten Na flux. The freshly cleaved crystals were analyzed by low temperature scann…
Landau Quantization and Quasiparticle Interference in the Three-Dimensional Dirac Semimetal Cd3As2
Sangjun Jeon, Brian B. Zhou, Andras Gyenis +7
Condensed matter systems provide a rich setting to realize Dirac and Majorana fermionic excitations and the possibility to manipulate them in materials for potential applications.…
Fractional and integer quantum Hall effects in the zeroth Landau level in graphene
Dmitry A. Abanin, Benjamin E. Feldman, Amir Yacoby +1
Experiments on the fractional quantized Hall effect in the zeroth Landau level of graphene have revealed some striking differences between filling factors in the ranges 0<|ν|<1 and…
Fractional Quantum Hall Phase Transitions and Four-flux Composite Fermions in Graphene
Benjamin E. Feldman, Andrei J. Levin, Benjamin Krauss +4
Graphene and its multilayers have attracted considerable interest owing to the fourfold spin and valley degeneracy of their charge carriers, which enables the formation of a rich v…
Unconventional Sequence of Fractional Quantum Hall States in Suspended Graphene
Benjamin E. Feldman, Benjamin Krauss, Jurgen H. Smet +1
Interactions among electrons can give rise to striking collective phenomena when the kinetic energy of charge carriers is suppressed. One example is the fractional quantum Hall eff…
Broken symmetry states and divergent resistance in suspended bilayer graphene
Benjamin E. Feldman, Jens Martin, Amir Yacoby
Graphene [1] and its bilayer have generated tremendous excitement in the physics community due to their unique electronic properties [2]. The intrinsic physics of these materials,…