☆ 4.8 Article

Intrinsic Nonlinear Hall Effect and Gate-Switchable Berry Curvature Sliding in Twisted Bilayer Graphene

PHYSICAL REVIEW LETTERS (2023)

相关参考文献

注意：仅列出部分参考文献，下载原文获取全部文献信息。

Article Multidisciplinary Sciences

Evidence for Dirac flat band superconductivity enabled by quantum geometry

Haidong Tian et al.

Summary: In a flat band superconductor, the charge carriers' velocity is extremely slow, leading to peculiar superconducting behavior. Using twisted bilayer graphene, the researchers investigate the effect of the slow velocity on the superconducting state. They find evidence for small Cooper pairs and discuss the unusual nature of ultra-strong coupling superconductivity in ultra-flat Dirac bands.

NATURE (2023)

添加到收藏夹

Article Multidisciplinary Sciences

Giant nonlinear Hall effect in twisted bilayer WSe2

Meizhen Huang et al.

Summary: This study reports a significant breakthrough in the efficiency of nonlinear Hall generation in small-angle-twisted bilayer WSe2, reaching 1000 V-1, which is a hundred times higher than the previous records. The researchers explained this result through the correlation-induced continuous Mott transition effect.

NATIONAL SCIENCE REVIEW (2023)

添加到收藏夹

Article Nanoscience & Nanotechnology

Graphene moire superlattices with giant quantum nonlinearity of chiral Bloch electrons

Pan He et al.

Summary: Graphene moire superlattices exhibit giant second-order nonlinear transports, both longitudinal and transverse, under zero magnetic field, originating from the skew scattering of chiral Bloch electrons. These findings provide an alternative means for inducing second-order transports in van der Waals heterostructures.

NATURE NANOTECHNOLOGY (2022)

添加到收藏夹

Article Physics, Multidisciplinary

Berry curvature dipole senses topological transition in a moire superlattice

Subhajit Sinha et al.

Summary: The topological aspects of the electron wave function, including the Berry curvature and Chern number, play a crucial role in determining the physical properties of materials. Twisted double bilayer graphene offers a tunable system to study topological transitions and has potential applications in next-generation Berry-curvature-based memory devices. Furthermore, the strain-induced Berry curvature dipole can be used to detect topological transitions in the bands.

NATURE PHYSICS (2022)

添加到收藏夹

Article Physics, Multidisciplinary

Giant Second-Order Nonlinear Hall Effect in Twisted Bilayer Graphene

Junxi Duan et al.

Summary: In the study, a giant second-order nonlinear Hall effect dominated by disorder-induced skew scattering was observed in twisted bilayer graphene. The magnitude and direction of the nonlinearity could be effectively tuned by gate voltage, and was mainly determined by the collaboration of static and dynamic disorders.

PHYSICAL REVIEW LETTERS (2022)

添加到收藏夹

Article Materials Science, Multidisciplinary

Giant nonlinear Hall effect in strained twisted bilayer graphene

Cheng-Ping Zhang et al.

Summary: Recent studies have shown that moiré flat bands in twisted bilayer graphene (TBG) can exhibit nontrivial Berry curvatures when aligned with a hexagonal boron nitride substrate, resulting in a correlated Chern insulator near the 3/4 filling. This letter demonstrates that the large Berry curvatures in the moiré bands can induce a strong nonlinear Hall (NLH) effect in strained TBG. The giant NLH effect appears generically for a twist angle near the magic angle due to the strong susceptibility of nearly flat moiré bands to symmetry breaking induced by strains.

PHYSICAL REVIEW B (2022)

添加到收藏夹

Article Physics, Multidisciplinary

Electrically tunable correlated and topological states in twisted monolayer-bilayer graphene

Shaowen Chen et al.

Summary: Twisted monolayer-bilayer graphene (tMBG) systems exhibit various correlated metallic and insulating states, as well as topological magnetic states. The phase diagram of tMBG can be switched under different perpendicular electric fields, providing a tunable platform for investigating correlated and topological states.

NATURE PHYSICS (2021)

添加到收藏夹

Article Multidisciplinary Sciences

Fractional Chern insulators in magic-angle twisted bilayer graphene

Yonglong Xie et al.

Summary: Fractional Chern insulators (FCIs) are lattice analogues of fractional quantum Hall states and have been recently observed in magic-angle twisted BLG at low magnetic field. The appearance of these states at 5 T is accompanied by the disappearance of nearby topologically trivial charge density wave states.

NATURE (2021)

添加到收藏夹

Article Chemistry, Physical

Chern insulators, van Hove singularities and topological flat bands in magic-angle twisted bilayer graphene

Shuang Wu et al.

Summary: In magic-angle twisted bilayer graphene, doping-induced Lifshitz transitions and van Hove singularities lead to the emergence of correlation-induced gaps and topologically non-trivial subbands. With the presence of a magnetic field, quantized Hall plateaus reveal the subband topology and signal the emergence of Chern insulators with Chern numbers. Additionally, a van Hove singularity at a filling of 3.5 suggests the possibility of a fractional Chern insulator, accompanied by a crossover from low-temperature metallic to high-temperature insulating behavior.

NATURE MATERIALS (2021)

添加到收藏夹

Article Engineering, Electrical & Electronic

Hall effects in artificially corrugated bilayer graphene without breaking time-reversal symmetry

Sheng-Chin Ho et al.

Summary: Research has shown that lithographically patterned strain can create a non-trivial band structure and exotic phase of matter in bilayer graphene.

NATURE ELECTRONICS (2021)

添加到收藏夹

Article Multidisciplinary Sciences

Terahertz detection based on nonlinear Hall effect without magnetic field

Yang Zhang et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2021)

添加到收藏夹

Article Multidisciplinary Sciences

Quantum theory of the nonlinear Hall effect

Z. Z. Du et al.

Summary: The nonlinear Hall effect is a quantum transport phenomenon where a voltage can be driven by two perpendicular currents, but a full quantum description is still lacking. The authors developed a complete quantum theory of the nonlinear Hall effect using diagrammatic technique, which will aid in exploring topological physics beyond the linear regime.

NATURE COMMUNICATIONS (2021)

添加到收藏夹

Review Physics, Applied

Nonlinear Hall effects

Z. Z. Du et al.

Summary: The recent discovery of the nonlinear Hall effect adds a new perspective to probing the spectral, symmetry, and topological properties of quantum materials. This effect, characterized by transverse Hall voltage in response to two longitudinal currents, does not require the breaking of time-reversal symmetry. It holds deep connections to symmetry and topology, offering new avenues for exploration in emergent quantum materials and phases of matter.

NATURE REVIEWS PHYSICS (2021)

添加到收藏夹

Article Materials Science, Multidisciplinary

Twisted bilayer graphene. I. Matrix elements, approximations, perturbation theory, and a k . p two-band model

B. Andrei Bernevig et al.

Summary: This study examines the twisted bilayer graphene model proposed by Bistritzer and MacDonald, providing an analytical understanding of its energetics and wave functions for many-body calculations. Approximation schemes for wave functions are provided, revealing insights into the accuracy of the original calculations and the neglect of certain matrix elements in the Coulomb Hamiltonian. Analytical calculations are also conducted to understand band properties at magic angles and in isotropic limits, shedding light on the band structure and symmetry considerations in TBG.

PHYSICAL REVIEW B (2021)

添加到收藏夹

Article Materials Science, Multidisciplinary

Tunable large Berry dipole in strained twisted bilayer graphene

Pierre A. Pantaleon et al.

Summary: Twisted bilayer graphene is highly sensitive to external perturbations, leading to valley currents and nonlinear Hall effect. These effects described by a Berry dipole exhibit high tunability due to their dependence on applied strain, coupling to the substrate, carrier density, and temperature.

PHYSICAL REVIEW B (2021)

添加到收藏夹

Article Materials Science, Multidisciplinary

Theories for the correlated insulating states and quantum anomalous Hall effect phenomena in twisted bilayer graphene

Jianpeng Liu et al.

Summary: Using an all-band Hartree-Fock variational method, the mechanisms behind correlated insulating states and quantum anomalous Hall effects in twisted bilayer graphene at integer fillings of flat bands have been explained. Correlated insulating states exhibit valley polarization and moire orbital antiferromagnetic ordering, while the quantum anomalous Hall states show spin and orbital ferromagnetic characteristics.

PHYSICAL REVIEW B (2021)

添加到收藏夹

Article Multidisciplinary Sciences

Tunable correlated Chern insulator and ferromagnetism in a moire superlattice

Guorui Chen et al.

NATURE (2020)

添加到收藏夹

Article Multidisciplinary Sciences

Intrinsic quantized anomalous Hall effect in a moire heterostructure

M. Serlin et al.

SCIENCE (2020)

添加到收藏夹

Article Multidisciplinary Sciences

High-frequency rectification via chiral Bloch electrons

Hiroki Isobe et al.

SCIENCE ADVANCES (2020)

添加到收藏夹

Article Physics, Multidisciplinary

Mechanism for Anomalous Hall Ferromagnetism in Twisted Bilayer Graphene

Nick Bultinck et al.

PHYSICAL REVIEW LETTERS (2020)

添加到收藏夹

Article Chemistry, Multidisciplinary

Moire Band Topology in Twisted Bilayer Graphene

Chao Ma et al.

NANO LETTERS (2020)

添加到收藏夹

Review Chemistry, Physical

Graphene bilayers with a twist

Eva Y. Andrei et al.

NATURE MATERIALS (2020)

添加到收藏夹

Article Chemistry, Physical

Nonlinear anomalous Hall effect in few-layer WTe2

Kaifei Kang et al.

NATURE MATERIALS (2019)

添加到收藏夹

Article Multidisciplinary Sciences

Tuning superconductivity in twisted bilayer graphene

Matthew Yankowitz et al.

SCIENCE (2019)

添加到收藏夹

Article Multidisciplinary Sciences

Maximized electron interactions at the magic angle in twisted bilayer graphene

Alexander Kerelsky et al.

NATURE (2019)

添加到收藏夹

Article Physics, Multidisciplinary

Strain Engineering of the Berry Curvature Dipole and Valley Magnetization in Monolayer MoS2

Joolee Son et al.

PHYSICAL REVIEW LETTERS (2019)

添加到收藏夹

Article Multidisciplinary Sciences

Emergent ferromagnetism near three-quarters filling in twisted bilayer graphene

Aaron L. Sharpe et al.

SCIENCE (2019)

添加到收藏夹

Article Multidisciplinary Sciences

Disorder-induced nonlinear Hall effect with time-reversal symmetry

Z. Z. Du et al.

NATURE COMMUNICATIONS (2019)

添加到收藏夹

Article Multidisciplinary Sciences

Observation of the nonlinear Hall effect under time-reversal-symmetric conditions

Qiong Ma et al.

NATURE (2019)

添加到收藏夹

Article Materials Science, Multidisciplinary

Designing flat bands by strain

Zhen Bi et al.

PHYSICAL REVIEW B (2019)

添加到收藏夹

Article Multidisciplinary Sciences

Unconventional superconductivity in magic-angle graphene superlattices

Yuan Cao et al.

NATURE (2018)

添加到收藏夹

Article Multidisciplinary Sciences

Correlated insulator behaviour at half-filling in magic-angle graphene superlattices

Yuan Cao et al.

NATURE (2018)

添加到收藏夹

Article Chemistry, Multidisciplinary

Accurate Gap Determination in Monolayer and Bilayer Graphene/h-BN Moiré Superlattices

Hakseong Kim et al.

NANO LETTERS (2018)

添加到收藏夹

Article Physics, Multidisciplinary

Band Signatures for Strong Nonlinear Hall Effect in Bilayer WTe2

Z. Z. Du et al.

PHYSICAL REVIEW LETTERS (2018)

添加到收藏夹

Article Multidisciplinary Sciences

Tunable moire bands and strong correlations in small-twist-angle bilayer graphene

Kyounghwan Kim et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2017)

添加到收藏夹

Article Materials Science, Multidisciplinary

Lattice relaxation and energy band modulation in twisted bilayer graphene

Nguyen N. T. Nam et al.

PHYSICAL REVIEW B (2017)

添加到收藏夹

Article Materials Science, Multidisciplinary

Hall number across a van Hove singularity

Akash V. Maharaj et al.

PHYSICAL REVIEW B (2017)

添加到收藏夹

Article Chemistry, Multidisciplinary

van der Waals Heterostructures with High Accuracy Rotational Alignment

Kyounghwan Kim et al.

NANO LETTERS (2016)

添加到收藏夹

Article Physics, Multidisciplinary

Quantum Nonlinear Hall Effect Induced by Berry Curvature Dipole in Time-Reversal Invariant Materials

Inti Sodemann et al.

PHYSICAL REVIEW LETTERS (2015)

添加到收藏夹

Article Multidisciplinary Sciences

Topological Bloch bands in graphene superlattices

Justin C. W. Song et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2015)

添加到收藏夹

Article Materials Science, Multidisciplinary

Atomic corrugation and electron localization due to Moire patterns in twisted bilayer graphenes

Kazuyuki Uchida et al.

PHYSICAL REVIEW B (2014)

添加到收藏夹

Article Multidisciplinary Sciences

One-Dimensional Electrical Contact to a Two-Dimensional Material

L. Wang et al.

SCIENCE (2013)

添加到收藏夹

Article Multidisciplinary Sciences

Moire bands in twisted double-layer graphene

Rafi Bistritzer et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2011)

添加到收藏夹

Article Physics, Multidisciplinary

Chern numbers in discretized Brillouin zone: Efficient method of computing (spin) Hall conductances

T Fukui et al.

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN (2005)

添加到收藏夹

© Peeref 2019-2024. All rights reserved.