https://flatland-pi.vercel.app/materials/twisted-graphene.html The newest items tagged Twisted graphene in the Flatland news feed. en Mon, 05 Oct 2026 08:10:53 GMT https://arxiv.org/abs/2610.03532 https://arxiv.org/abs/2610.03532 Mon, 05 Oct 2026 04:00:00 GMT arXiv: We theoretically investigate the optical response of the WSe2 monolayer vertically stacked on twisted bilayer graphene (tBG) under electrostatic doping. In this heterostructure, the doped moiré superlattice of tBG generates a spatially modulated electrostatic potential that couples to the electron and hole constituents… Theory Twisted graphene Graphene WSe₂ https://arxiv.org/abs/2610.03532v1 https://arxiv.org/abs/2610.03532v1 Fri, 02 Oct 2026 16:18:34 GMT arXiv: We theoretically investigate the optical response of the WSe2 monolayer vertically stacked on twisted bilayer graphene (tBG) under electrostatic doping. In this heterostructure, the doped moiré superlattice of tBG generates a spatially modulated electrostatic potential that couples to the electron and hole constituents… Theory Experiment Twisted graphene Graphene WSe₂ http://link.aps.org/doi/10.1103/h96k-q32d http://link.aps.org/doi/10.1103/h96k-q32d Fri, 02 Oct 2026 10:00:00 GMT Physical Review Letters: At an even filling, a rhombohedral octalayer graphene moiré superlattice with electric-field-tunable chirality hosts a robust Chern insulating state. [Phys. Rev. Lett. 137, 146505] Published Fri Oct 02, 2026 Theory Twisted graphene Graphene https://doi.org/10.1021/acsnano.6c08506 https://doi.org/10.1021/acsnano.6c08506 Thu, 01 Oct 2026 21:01:26 GMT ACS Nano: Moiré superlattices are generally assumed to act only at the interface where lattice mismatch or twist occurs. Here, we study charge transport in large-angle helical twisted trilayer graphene, where interlayer tunneling is strongly reduced. When only the top monolayer graphene is aligned with hBN, the electronic… Experiment Twisted graphene Graphene hBN https://arxiv.org/abs/2610.01486v1 https://arxiv.org/abs/2610.01486v1 Thu, 01 Oct 2026 11:29:50 GMT arXiv: Most proposals for Z₃ parafermions in fractional quantum Hall-superconductor structures used the spin-unpolarized ν= 2/3 Halperin (1,1,2) state. The fractional quantum anomalous Hall (FQAH) states of twisted MoTe₂ and rhombohedral graphene are believed to be spin- and valley-polarized Jain states, with the same… Theory Twisted graphene Graphene MoTe₂ https://arxiv.org/abs/2609.39986v1 https://arxiv.org/abs/2609.39986v1 Wed, 30 Sep 2026 15:41:44 GMT arXiv: Helical trilayer graphene (HTG) has emerged as a highly tunable moire quantum material that hosts strong electronic correlations and nontrivial band topology. However, the atomic-scale lattice structure and local electronic properties have remained largely unexplored. Here we present a comprehensive real-space study of… Theory Experiment Twisted graphene Graphene https://arxiv.org/abs/2609.36703v1 https://arxiv.org/abs/2609.36703v1 Tue, 29 Sep 2026 04:42:10 GMT arXiv: Understanding and controlling interlayer coupling in van der Waals (vdW) materials is crucial for engineering novel electronic phenomena, including correlated states, topological phases, and superconductivity. Twisted bilayer graphene (TBG) offers a highly tunable platform to explore how interlayer orientation and… Theory Twisted graphene Graphene hBN https://arxiv.org/abs/2606.06389 https://arxiv.org/abs/2606.06389 Tue, 29 Sep 2026 04:00:00 GMT arXiv: Magic-angle twisted bilayer graphene (MATBG) hosts flat bands whose correlated and topological phases depend sensitively on the electronic point-group symmetry, which is set by the device configuration including twist angle, heterostrain, and substrate and cap-layer coupling. Here we report near-infrared photocurrent… Theory Twisted graphene Graphene WSe₂ hBN http://link.aps.org/doi/10.1103/mp1d-6nnl http://link.aps.org/doi/10.1103/mp1d-6nnl Mon, 28 Sep 2026 10:00:00 GMT Physical Review B: The correlated phase diagram of magic-angle twisted bilayer graphene (MATBG) is very sensitive to both material parameters and modeling choices. To limit the impact of these factors, here, the authors propose an embedding workflow for modeling MATBG and other moiré materials that incorporates automatic gauge fixing and… Theory Twisted graphene Graphene https://arxiv.org/abs/2604.12614 https://arxiv.org/abs/2604.12614 Mon, 28 Sep 2026 04:00:00 GMT arXiv: Moiré superlattices are generally assumed to act only at the interface where lattice mismatch or twist occurs. Here, we study charge transport in large-angle helical twisted trilayer graphene, where interlayer tunneling is strongly reduced. When only the top monolayer graphene is aligned with hBN, the electronic… Theory Twisted graphene Graphene hBN https://arxiv.org/abs/2609.30365v1 https://arxiv.org/abs/2609.30365v1 Thu, 24 Sep 2026 18:00:00 GMT arXiv: We demonstrate repulsion-driven topological superconductivity of a single species of Dirac fermions, motivated by valley-polarized phases observed in two-dimensional materials such as rhombohedral graphene. Using density-matrix renormalization group calculations on the Qi-Wu-Zhang lattice model on cylinders of width up… Theory Twisted graphene Graphene https://arxiv.org/abs/2609.28687v1 https://arxiv.org/abs/2609.28687v1 Wed, 23 Sep 2026 18:27:53 GMT arXiv: Quantum geometry governs a wide array of physical observables in topological quantum materials. In its ideal limit, quantum geometry yields exact bounds and analytical results for a growing class of observables. However, a comparable framework for the shift current remains elusive because it depends on geometric… Theory Twisted graphene Graphene MoTe₂ https://www.nature.com/articles/s41586-026-11033-1 https://www.nature.com/articles/s41586-026-11033-1 Wed, 23 Sep 2026 00:00:00 GMT Nature: Observations of rhombohedral graphene on a WSe2 substrate at varying temperature, magnetic field and current indicate the presence of regions of gate space with zero-resistance superconductivity alongside others with finite saturation resistance. Experiment Twisted graphene Graphene WSe₂ http://link.aps.org/doi/10.1103/zsxf-4qr1 http://link.aps.org/doi/10.1103/zsxf-4qr1 Tue, 22 Sep 2026 10:00:00 GMT Physical Review B: Based on the continuum model and independent-particle approximation, this work systematically investigates the synergistic modulation effects of stacking configuration and twist angle on second-harmonic generation (SHG) in twisted bilayer graphene (TBG), twisted monolayer–bilayer graphene (TMBG), tw… [Phys. Rev. B 114… Theory Twisted graphene Graphene https://arxiv.org/abs/2609.24734 https://arxiv.org/abs/2609.24734 Tue, 22 Sep 2026 04:00:00 GMT arXiv: Kondo effect in strongly correlated systems arises from the antiferromagnetic coupling between itinerant conduction electrons and localized magnetic moments, giving rise to a variety of exotic quantum phenomena. Two-dimensional moiré superlattice systems provide a highly tunable platform featuring topological flat… Theory Twisted graphene Graphene https://www.nature.com/articles/s41467-026-76586-1 https://www.nature.com/articles/s41467-026-76586-1 Fri, 18 Sep 2026 00:00:00 GMT Nature Communications: Whether superconductivity in twisted bilayer graphene emerges from small or large Fermi surfaces remains debated. Here, the authors propose a symmetric pseudogap metal with small hole pockets, showing that local-moment pairing can transfer to mobile carriers and yield two-gap nematic superconductivity Theory Twisted graphene Graphene https://arxiv.org/abs/2609.20958v1 https://arxiv.org/abs/2609.20958v1 Thu, 17 Sep 2026 18:11:57 GMT arXiv: The coupling between layered atomically-thin materials mediated by van der Waals forces allows strong electronic correlations, unique topological signatures, and non-trivial spin textures, all of which play an important role in the creation of spin-, valley-, and orbitronic devices. Here, we demonstrate that twisted… Theory Experiment Twisted graphene Graphene https://arxiv.org/abs/2609.20932v1 https://arxiv.org/abs/2609.20932v1 Thu, 17 Sep 2026 18:00:10 GMT arXiv: We identify a mechanism in which soft nonunitary fluctuations of the pair condensate can suppress phase coherence in a two-dimensional Rashba superconductor proximate to easy-plane ferromagnetic order. This spin polarization couples linearly to the supercurrent through a Lifshitz invariant, acting as an emergent gauge… Theory Twisted graphene Graphene https://arxiv.org/abs/2609.20158v1 https://arxiv.org/abs/2609.20158v1 Thu, 17 Sep 2026 12:48:15 GMT arXiv: The dynamical dielectric response of twisted bilayer graphene is explored in large-angle dispersive-band and small-angle quasi-flat-band regimes using time-dependent density-functional theory within the random-phase approximation. At the reference bilayer-graphene interlayer distance, weak coupling in the largest-angle… Theory Twisted graphene Graphene https://arxiv.org/abs/2609.18954 https://arxiv.org/abs/2609.18954 Thu, 17 Sep 2026 04:00:00 GMT arXiv: Chiral superconductivity has recently been confirmed in rhombohedral tetra- and pentalayer graphene near the BCS--BEC crossover, but no theory tells the experimentalist what thermal Hall response to expect, or why any signal should persist above the phase-coherence temperature Tc. We show that the parity anomaly of… Theory Twisted graphene Graphene https://arxiv.org/abs/2604.19929 https://arxiv.org/abs/2604.19929 Thu, 17 Sep 2026 04:00:00 GMT arXiv: We study twisted bilayer WSe₂ within a continuum moiré model and apply a method for treating finite geometries directly in the continuum framework, thereby avoiding the limitations associated with purely momentum-space formulations and Wannier obstructions. By projecting a confinement potential onto bulk moiré… Theory Twisted graphene WSe₂ https://arxiv.org/abs/2607.15189 https://arxiv.org/abs/2607.15189 Thu, 17 Sep 2026 04:00:00 GMT arXiv: Gyrotropy in twisted bilayer graphene can be used as a signature of interlayer electronic coupling. Gyrotropy can emerge in the absence of interlayer coupling in time-reversal symmetric bilayer systems. This gyrotropy originates from the extrinsic geometry associated with the physical geometry of the system and is… Theory Twisted graphene Graphene MoTe₂ https://arxiv.org/abs/2609.19283v1 https://arxiv.org/abs/2609.19283v1 Wed, 16 Sep 2026 18:00:18 GMT arXiv: Motivated by the recent experimental signatures of chiral superconductivity in valley-polarized graphene- and transition-metal-dichalcogenide-based systems, we investigate the possibility of chiral pairing in the absence of valley polarization or time-reversal symmetry breaking. For systems with opposite Berry… Theory Twisted graphene Graphene https://arxiv.org/abs/2606.23994 https://arxiv.org/abs/2606.23994 Wed, 16 Sep 2026 04:00:00 GMT arXiv: The pairing symmetry of magic-angle moiré graphene is a fundamental question that remains unresolved. Combining experimental and theoretical inputs, we constrain the superconducting order parameters that can emerge from the incommensurate Kekulé spiral (IKS) normal state on the hole-doped side of ν= -2. Imposing the… Theory Twisted graphene Graphene https://arxiv.org/abs/2606.21229 https://arxiv.org/abs/2606.21229 Tue, 15 Sep 2026 04:00:00 GMT arXiv: The superconducting diode effect offers a powerful probe into the fundamental symmetries of quantum materials. Recent studies on twisted graphene diodes have predominantly focused on bilayer or trilayer systems under out-of-plane magnetic fields. Here, we demonstrate both out-of-plane and in-plane driven Josephson… Theory Twisted graphene Graphene https://arxiv.org/abs/2609.16483v2 https://arxiv.org/abs/2609.16483v2 Tue, 15 Sep 2026 01:14:02 GMT arXiv: Electronic states with coexisting Wigner-crystal order can sometimes exhibit a quantum Hall effect over a finite range of electron densities---i.e., exhibit ``extended'' quantum Hall (QH) plateaus in the absence of disorder. Such an extended quantum Hall state can then compete with other QH states over the same density… Theory Twisted graphene Graphene https://arxiv.org/abs/2609.12057 https://arxiv.org/abs/2609.12057 Mon, 14 Sep 2026 04:00:00 GMT arXiv: Strongly interacting electrons can spontaneously break spatial symmetries to form electron crystals, exemplified by the Wigner crystal. Recent studies of topological flat bands in rhombohedral graphene have suggested more exotic forms of crystallization, including anomalous Hall crystals that entangle charge order with… Theory Experiment Twisted graphene Graphene https://advanced.onlinelibrary.wiley.com/doi/10.1002/adma.202514008?af=R https://advanced.onlinelibrary.wiley.com/doi/10.1002/adma.202514008?af=R Fri, 11 Sep 2026 22:30:41 GMT Advanced Materials Experiment Twisted graphene Graphene https://arxiv.org/abs/2609.12504v1 https://arxiv.org/abs/2609.12504v1 Fri, 11 Sep 2026 07:08:31 GMT arXiv: Rhombohedral multilayer graphene has emerged as a remarkably versatile platform for exploring strong correlation driven quantum states arising from low-energy topological flat bands. When reconstructed by the moire superlattice, these bands host a wide range of emergent novel states, including integer and fractional… Theory Twisted graphene Graphene https://arxiv.org/abs/2603.24766 https://arxiv.org/abs/2603.24766 Fri, 11 Sep 2026 04:00:00 GMT arXiv: Understanding the superfluid stiffness \(D_s\) is a central problem in flat-band superconductivity. It is often interpreted together with spectroscopic probes such as tunneling, since both ultimately reflect the same superconducting quasiparticles. Their relationship is nevertheless complicated in flat bands, where… Theory Twisted graphene Graphene https://arxiv.org/abs/2609.11732v1 https://arxiv.org/abs/2609.11732v1 Thu, 10 Sep 2026 15:47:16 GMT arXiv: Quantum Hall effects (QHE) host one-dimensional topologically-protected edge channels, which can serve as an essential ingredient in exotic quantum electronic systems. Yet the manual reconstruction of Landau-level topology, by electrostatic confinement or symmetry breaking, remains experimentally challenging. Here, we… Theory Experiment Twisted graphene NbOI₂, CrOCl, TiOCl Graphene http://link.aps.org/doi/10.1103/tx56-fym2 http://link.aps.org/doi/10.1103/tx56-fym2 Wed, 09 Sep 2026 10:00:00 GMT Physical Review B: We investigate chiral superconductivity emerging from parent electronic states with non-uniform Berry curvature, motivated by recent experiments in rhombohedral graphene multilayers. Using the continuum λN-model—a tunable platform with independently controllable Berry curvature profiles—we so… [Phys. Rev. B 114… Theory Twisted graphene Graphene https://arxiv.org/abs/2609.09422v1 https://arxiv.org/abs/2609.09422v1 Tue, 08 Sep 2026 20:21:23 GMT arXiv: Fractional quantum anomalous Hall effect (FQAHE) has been discovered in twisted MoTe₂ and rhombohedral graphene/hBN moiré superlattices. Such van der Waals heterostructures feature a tuning knob of gate displacement field D, which is absent from the conventional fractional quantum Hall systems in two-dimensional… Theory Twisted graphene Graphene MoTe₂ hBN https://arxiv.org/abs/2609.08347v2 https://arxiv.org/abs/2609.08347v2 Tue, 08 Sep 2026 07:18:10 GMT arXiv: We develop a squared-Hamiltonian description of twisted bilayer graphene beyond the chiral limit to explain why the first magic angle remains robust under lattice relaxation, while higher-order magic angles are strongly destabilized. Starting from the non-chiral Bistritzer--MacDonald model with finite same-sublattice… Theory Twisted graphene Graphene https://phys.org/news/2026-09-magic-angle-graphene-evidence-unconventional.html https://phys.org/news/2026-09-magic-angle-graphene-evidence-unconventional.html Fri, 04 Sep 2026 21:20:03 GMT Phys.org: Researchers have completely suppressed superconductivity in magic-angle graphene by screening interactions between electrons, helping resolve a long-running debate about the origin of the phenomenon. Everyone Twisted graphene Graphene http://link.aps.org/doi/10.1103/ph9f-z5vg http://link.aps.org/doi/10.1103/ph9f-z5vg Thu, 03 Sep 2026 10:00:00 GMT Physical Review B: We show that a hybrid moiré one-dimensional (moiré-1D) superlattice gives electrical control over whether a Dirac-Dirac momentum resonance opens a charge-neutrality gap, and through which mass channel. In twisted bilayer graphene subject to a layer-dependent unidirectional scalar potential, the char… [Phys. Rev. B 114… Theory Twisted graphene Graphene https://arxiv.org/abs/2609.02815v1 https://arxiv.org/abs/2609.02815v1 Wed, 02 Sep 2026 16:59:12 GMT arXiv: A standard approach for studying magic angle twisted bilayer graphene (MATBG)'s correlated electronic phase diagram is to project the Coulomb interaction down to effective models only involving electrons in single-particle flat bands and some nearby remote bands. We provide a novel systematic derivation of a… Theory Twisted graphene Graphene https://arxiv.org/abs/2609.02403v1 https://arxiv.org/abs/2609.02403v1 Wed, 02 Sep 2026 10:16:54 GMT arXiv: Advances in chemical vapor deposition (CVD) growth have driven graphene crystal quality to unprecedented levels, yet it is still unknown whether this route can realize the fragile flat-band and correlated states of the magic-angle (MA) twisted bilayer graphene (TBG). Here, we report on the experimental observation by… Experiment Twisted graphene Graphene https://phys.org/news/2026-08-faint-infrared-insulator-metal-transition.html https://phys.org/news/2026-08-faint-infrared-insulator-metal-transition.html Mon, 31 Aug 2026 22:20:03 GMT Phys.org: One of the central ideas in modern physics is the phase transition—a sudden transformation of the state of a material. We encounter phase transitions throughout everyday life: water freezes into ice, wax melts in the warmth of a flame, and water vapor condenses into droplets on a cold window. In these familiar… Everyone Twisted graphene Graphene https://arxiv.org/abs/2608.30882v1 https://arxiv.org/abs/2608.30882v1 Mon, 31 Aug 2026 14:40:33 GMT arXiv: Slow twist-angle and heterostrain textures in twisted bilayer graphene provide a natural route to phase-space Berry geometry. We show that a purely geometric tetrad/shift sector does not generate mixed Berry curvature once the spin connection is treated consistently. By contrast, a projected textured mini-Dirac cone in… Theory Twisted graphene Graphene