424 citations · 1.8k across the 21 of their papers we have counts for
15 papers · 1 filter
Visualizing moiré ferroelectricity via plasmons and nano-photocurrent in graphene/twisted-WSe2 structures
Shuai Zhang, Yang Liu, Zhiyuan Sun +28
Ferroelectricity, a spontaneous and reversible electric polarization, is found in certain classes of van der Waals (vdW) material heterostructures. The discovery of ferroelectricit…
Unconventional Nonlocal Relaxation Dynamics in a Twisted Graphene Moire Superlattice
Dorri Halbertal, Simon Turkel, Christopher J. Ciccarino +11
The electronic and structural properties of atomically thin materials can be controllably tuned by assembling them with an interlayer twist. During this process, constituent layers…
Moiré Modulated Lattice Strain and Thickness-Dependent Lattice Expansion in Epitaxial Ultrathin Films of PdTe
Jacob Cook, Dorri Halbertal, Qiangsheng Lu +4
We report the epitaxial growth of PdTe ultrathin films on topological insulator BiSe. A prominent Moiré pattern was observed in STM measurements. The Moiré periodicity…
Multi-layered atomic relaxation in van der Waals heterostructures
Dorri Halbertal, Lennart Klebl, Valerie Hsieh +6
When two-dimensional van der Waals materials are stacked to build heterostructures, moiré patterns emerge from twisted interfaces or from mismatch in lattice constant of individual…
Dual-gated graphene devices for near-field nano-imaging
Sai S. Sunku, Dorri Halbertal, Rebecca Engelke +11
Graphene-based heterostructures display a variety of phenomena that are strongly tunable by electrostatic local gates. Monolayer graphene (MLG) exhibits tunable surface plasmon pol…
Hyperbolic enhancement of photocurrent patterns in minimally twisted bilayer graphene
Sai S. Sunku, Dorri Halbertal, Tobias Stauber +10
Quasi-periodic moiré patterns and their effect on electronic properties of twisted bilayer graphene (TBG) have been intensely studied. At small twist angle , due to atomic recon…
Deep moiré potentials in twisted transition metal dichalcogenide bilayers
Sara Shabani, Dorri Halbertal, Wenjing Wu +7
In twisted bilayers of semiconducting transition metal dichalcogenides (TMDs), a combination of structural rippling and electronic coupling gives rise to periodic moiré potentials…
Moiré metrology of energy landscapes in van der Waals heterostructures
Dorri Halbertal, Nathan R. Finney, Sai S. Sunku +20
The emerging field of twistronics, which harnesses the twist angle between two-dimensional materials, represents a promising route for the design of quantum materials, as the twist…
Nano-photocurrent mapping of local electronic structure in twisted bilayer graphene
Sai S. Sunku, Alexander S. McLeod, Tobias Stauber +10
We report a combined nano-photocurrent and infrared nanoscopy study of twisted bilayer graphene (TBG) enabling access to the local electronic phenomena at length scales as short as…
Nonlinear twistoptics at symmetry-broken interfaces
Kaiyuan Yao, Nathan R. Finney, Jin Zhang +17
Broken symmetries induce strong nonlinear optical responses in materials and at interfaces. Twist angle can give complete control over the presence or lack of inversion symmetry at…
Moiré-less Correlations in ABCA Graphene
Alexander Kerelsky, Carmen Rubio-Verdú, Lede Xian +13
Atomically thin van der Waals materials stacked with an interlayer twist have proven to be an excellent platform towards achieving gate-tunable correlated phenomena linked to the f…
Imaging work and dissipation in the quantum Hall state in graphene
Arthur Marguerite, John Birkbeck, Amit Aharon-Steinberg +7
Topology is a powerful recent concept asserting that quantum states could be globally protected against local perturbations. Dissipationless topologically protected states are thus…
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…
Resonant electron-lattice cooling in graphene
Jian Feng Kong, Leonid Levitov, Dorri Halbertal +1
Controlling energy flows in solids through switchable electron-lattice cooling can grant access to a range of interesting and potentially useful energy transport phenomena. Here we…
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…