☆ 4.8 Article

Observation of the Time-Reversal Symmetric Hall Effect in Graphene-WSe2 Heterostructures at Room Temperature

NANO LETTERS (2023)

Related references

Note: Only part of the references are listed.

Article Multidisciplinary Sciences

Time-reversal even charge hall effect from twisted interface coupling

Dawei Zhai et al.

Summary: The authors find that interlayer hopping in twisted bilayers allows for a linear charge Hall effect under time reversal symmetry, which is typically forbidden by the Onsager relation. This effect is achieved through interfacial coupling and a twisted stacking, which fulfills the overall chiral symmetry requirement. The research demonstrates this effect in twisted bilayer graphene and twisted homobilayer transition metal dichalcogenides, showing giant Hall ratios under experimentally practical conditions and gate voltage control.

NATURE COMMUNICATIONS (2023)

Add to Collection

Article Physics, Multidisciplinary

Riemannian geometry of resonant optical responses

Junyeong Ahn et al.

Summary: This study establishes a general theory of Riemannian geometry for resonant optical processes by identifying transition dipole moment matrix elements as tangent vectors, showing that optical responses can generally be thought of as manifestations of the Riemannian geometry of quantum states.

NATURE PHYSICS (2022)

Add to Collection

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)

Add to Collection

Article Physics, Multidisciplinary

Resonant Second-Harmonic Generation as a Probe of Quantum Geometry

Pankaj Bhalla et al.

Summary: Nonlinear responses are actively studied as probes of topology and band geometric properties of solids. In this study, the theory of second harmonic generation is generalized to include Fermi surface effects and finite scattering timescale in metallic systems. The experimental observation in monolayer Weyl semimetal and topological antiferromagnet is discussed.

PHYSICAL REVIEW LETTERS (2022)

Add to Collection

Article Chemistry, Physical

Gate modulation of the spin current in graphene/WSe2 van der Waals heterostructure at room temperature

Ghulam Dastgeer et al.

Summary: This study experimentally demonstrates the interconversion of spin and charge currents in a Graphene/WSe2 van der Waals heterostructure induced by the proximity effect. The spin currents induced by Rashba Edelstein effect and spin Hall effect are distinguished and extracted individually via an external magnetic field. The magnitude of spin transport and their corresponding spin efficiencies are modulated by an applied electric field and temperature, providing a new approach for fabricating fast and low-power spintronic devices for quantum scale applications.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

Add to Collection

Article Materials Science, Multidisciplinary

Nonlinear anomalous Hall effects probe topological phase-transitions in twisted double bilayer graphene

Atasi Chakraborty et al.

Summary: Researchers investigated the family of second-order nonlinear anomalous (NLA) Hall effects in the moire system of twisted double bilayer graphene (TDBG), demonstrating that these effects can probe topological phase transitions. The study found that the entire family of NLA Hall responses undergo a sign reversal across a topological phase transition, establishing a deeper connection between valley topology and nonlinear Hall effects in time-reversal symmetric systems.

2D MATERIALS (2022)

Add to Collection

Article Nanoscience & Nanotechnology

Experimental observation of spin-split energy dispersion in high-mobility single-layer graphene/WSe2 heterostructures

Priya Tiwari et al.

Summary: This research article reports the experimental determination of the band structure of single-layer graphene (SLG) in the presence of proximity-induced spin-orbit coupling. The study finds clear spin-splitting of the graphene bands and a substantial increase in the Fermi velocity. Theoretical modeling and analysis further reveal evidence of a band gap opening and band inversion. The study fills a gap in the quantitative measurement of the spin-splitting and low-energy dispersion relation in SLG.

NPJ 2D MATERIALS AND APPLICATIONS (2022)

Add to Collection

Article Materials Science, Multidisciplinary

Charge-to-spin conversion in twisted graphene/WSe2 heterostructures

Seungjun Lee et al.

Summary: In this study, we investigate the twist-angle dependence of spin-orbit coupling proximity effects and charge-to-spin conversion in graphene/WSe2 heterostructures from first principles. We find that the charge-to-spin conversion strongly depends on the twist angle, with optimal standard Rashba-Edelstein and disorder-free spin Hall efficiencies achieved at approximately 30 degrees twisting. The symmetry breaking due to twisting also gives rise to an unconventional Rashba-Edelstein effect, where the electrically generated nonequilibrium spin densities possess spins collinear to the applied electric field. Our work provides a new perspective on the electrical generation of spins in van der Waals heterostructures.

PHYSICAL REVIEW B (2022)

Add to Collection

Article Chemistry, Physical

Gate modulation of the spin current in graphene/WSe2 van der Waals heterostructure at room temperature

Ghulam Dastgeer et al.

Summary: This study experimentally demonstrates the room temperature interconversion of spin and charge currents in Graphene/WSe2 van der Waals heterostructure induced by the proximity effect. The spin currents generated by Rashba Edelstein effect and spin Hall effect are successfully discriminated and extracted individually through an external magnetic field.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

Add to Collection

Article Chemistry, Multidisciplinary

Observation of Time-Reversal Invariant Helical Edge-Modes in Bilayer Graphene/WSe2 Heterostructure

Priya Tiwari et al.

Summary: This study reports the experimental realization of time-reversal invariant helical edge-modes in bilayer graphene/monolayer WSe2-based heterostructures, which are considered as precursors to generic topological insulators. The topological phase observed in the study is characterized by bulk bandgap and helical edge-modes with quantized electrical conductance. The study also demonstrates the tunability of different topological phases with electric and magnetic fields, allowing for topological phase transitions between trivial and distinct phases.

ACS NANO (2021)

Add to Collection

Article Physics, Multidisciplinary

Electric-Field-Tunable Valley Zeeman Effect in Bilayer Graphene Heterostructures: Realization of the Spin-Orbit Valve Effect

Priya Tiwari et al.

Summary: This study reports the discovery of electric-field-induced transition from a topologically trivial to a topologically nontrivial band structure in an atomically sharp heterostructure of bilayer graphene (BLG) and single-layer WSe2, based on the theoretical predictions of Gmitra and Fabian. The analysis shows that this bandstructure evolution arises from an interplay between proximity-induced strong spin-orbit interaction (SOI) and the layer polarizability in BLG. The results demonstrate the potential for achieving highly tunable devices based on the valley Zeeman effect in dual-gated two-dimensional materials.

PHYSICAL REVIEW LETTERS (2021)

Add to Collection

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)

Add to Collection

Article Nanoscience & Nanotechnology

Boosting proximity spin-orbit coupling in graphene/WSe2 heterostructures via hydrostatic pressure

Balint Fulop et al.

Summary: Van der Waals heterostructures composed of multiple few layer crystals can be used to engineer novel materials with predefined properties. For example, weakly coupling graphene to materials with large spin-orbit coupling allows for a significant spin-orbit coupling to be induced in graphene via proximity effects. The interlayer distance can be changed via hydrostatic pressure to enhance the interlayer coupling, as demonstrated in measurements on a graphene/WSe2 heterostructure exposed to increasing pressure.

NPJ 2D MATERIALS AND APPLICATIONS (2021)

Add to Collection

Article Multidisciplinary Sciences

Layer Hall effect in a 2D topological axion antiferromagnet

Anyuan Gao et al.

Summary: This study explores the internal structure of topological antiferromagnets, revealing the layer Hall effect and the layer-locked Berry curvature characteristics. The research presents new pathways for detecting and manipulating the internal spatial structure of fully compensated topological antiferromagnets.

NATURE (2021)

Add to Collection

Article Materials Science, Multidisciplinary

Zero-field spin resonance in graphene with proximity-induced spin-orbit coupling

Abhishek Kumar et al.

Summary: Collective spin excitations in graphene with proximity-induced spin-orbit coupling of the Rashba and valley-Zeeman types are investigated. It is found that even in the absence of an external magnetic field, the system supports collective spin modes, detectable via zero-field electron spin resonance (ESR) and zero-field electric-dipole spin resonance (EDSR). The effects of electron-electron interaction are analyzed, leading to splitting of both ESR and EDSR peaks which can be used to extract spin-orbit coupling constants and many-body interaction parameters.

PHYSICAL REVIEW B (2021)

Add to Collection

Article Nanoscience & Nanotechnology

Gate tunability of highly efficient spin-to-charge conversion by spin Hall effect in graphene proximitized with WSe2

Franz Herling et al.

APL MATERIALS (2020)

Add to Collection

Article Materials Science, Multidisciplinary

Influence of interface induced valley-Zeeman and spin-orbit couplings on transport in heterostructures of graphene on WSe2

M. Zubair et al.

PHYSICAL REVIEW B (2020)

Add to Collection

Article Multidisciplinary Sciences

Disorder-induced nonlinear Hall effect with time-reversal symmetry

Z. Z. Du et al.

NATURE COMMUNICATIONS (2019)

Add to Collection

Article Chemistry, Multidisciplinary

Charge-to-Spin Conversion by the Rashba-Edelstein Effect in Two-Dimensional van der Waals Heterostructures up to Room Temperature

Talieh S. Ghiasi et al.

NANO LETTERS (2019)

Add to Collection

Article Physics, Multidisciplinary

Quantum Valley Hall Effect, Orbital Magnetism, and Anomalous Hall Effect in Twisted Multilayer Graphene Systems

Jianpeng Liu et al.

PHYSICAL REVIEW X (2019)

Add to Collection

Article Materials Science, Multidisciplinary

Twist-angle dependence of the proximity spin-orbit coupling in graphene on transition-metal dichalcogenides

Yang Li et al.

PHYSICAL REVIEW B (2019)

Add to Collection

Article Materials Science, Multidisciplinary

Spin-orbit interaction induced in graphene by transition metal dichalcogenides

T. Wakamura et al.

PHYSICAL REVIEW B (2019)

Add to Collection

Review Chemistry, Multidisciplinary

Spin transport in graphene/transition metal dichalcogenide heterostructures

Jose H. Garcia et al.

CHEMICAL SOCIETY REVIEWS (2018)

Add to Collection

Article Materials Science, Multidisciplinary

Planar Hall effect in the Weyl semimetal GdPtBi

Nitesh Kumar et al.

PHYSICAL REVIEW B (2018)

Add to Collection

Article Physics, Multidisciplinary

Optimal Charge-to-Spin Conversion in Graphene on Transition-Metal Dichalcogenides

Manuel Offidani et al.

PHYSICAL REVIEW LETTERS (2017)

Add to Collection

Article Physics, Multidisciplinary

Giant Spin Lifetime Anisotropy in Graphene Induced by Proximity Effects

Aron W. Cummings et al.

PHYSICAL REVIEW LETTERS (2017)

Add to Collection

Article Physics, Multidisciplinary

Chiral Anomaly as the Origin of the Planar Hall Effect in Weyl Semimetals

S. Nandy et al.

PHYSICAL REVIEW LETTERS (2017)

Add to Collection

Article Materials Science, Multidisciplinary

Magnetotransport in heterostructures of transition metal dichalcogenides and graphene

Tobias Voelkl et al.

PHYSICAL REVIEW B (2017)

Add to Collection

Article Nanoscience & Nanotechnology

Electrical control of the valley Hall effect in bilayer MoS2 transistors

Jieun Lee et al.

NATURE NANOTECHNOLOGY (2016)

Add to Collection

Article Multidisciplinary Sciences

Tuning the valley and chiral quantum state of Dirac electrons in van der Waals heterostructures

J. R. Wallbank et al.

SCIENCE (2016)

Add to Collection

Article Multidisciplinary Sciences

The hot pick-up technique for batch assembly of van der Waals heterostructures

Filippo Pizzocchero et al.

NATURE COMMUNICATIONS (2016)

Add to Collection

Article Physics, Multidisciplinary

Origin and Magnitude of 'Designer' Spin-Orbit Interaction in Graphene on Semiconducting Transition Metal Dichalcogenides

Zhe Wang et al.

PHYSICAL REVIEW X (2016)

Add to Collection

Article Materials Science, Multidisciplinary

Trivial and inverted Dirac bands and the emergence of quantum spin Hall states in graphene on transition-metal dichalcogenides

Martin Gmitra et al.

PHYSICAL REVIEW B (2016)

Add to Collection

Article Physics, Multidisciplinary

Gate-tunable topological valley transport in bilayer graphene

Mengqiao Sui et al.

NATURE PHYSICS (2015)

Add to Collection

Article Physics, Multidisciplinary

Generation and detection of pure valley current by electrically induced Berry curvature in bilayer graphene

Y. Shimazaki et al.

NATURE PHYSICS (2015)

Add to Collection

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)

Add to Collection

Article Multidisciplinary Sciences

Strong interface-induced spin-orbit interaction in graphene on WS2

Zhe Wang et al.

NATURE COMMUNICATIONS (2015)

Add to Collection

Review Nanoscience & Nanotechnology

Graphene spintronics

Wei Han et al.

NATURE NANOTECHNOLOGY (2014)

Add to Collection

Article Multidisciplinary Sciences

The valley Hall effect in MoS2 transistors

K. F. Mak et al.

SCIENCE (2014)

Add to Collection

Article Multidisciplinary Sciences

Spin-orbit proximity effect in graphene

A. Avsar et al.

NATURE COMMUNICATIONS (2014)

Add to Collection

Article Multidisciplinary Sciences

One-Dimensional Electrical Contact to a Two-Dimensional Material

L. Wang et al.

SCIENCE (2013)

Add to Collection

Article Physics, Multidisciplinary

Coupled Spin and Valley Physics in Monolayers of MoS2 and Other Group-VI Dichalcogenides

Di Xiao et al.

PHYSICAL REVIEW LETTERS (2012)

Add to Collection

Article Materials Science, Multidisciplinary

Quantum anomalous Hall effect in graphene from Rashba and exchange effects

Zhenhua Qiao et al.

PHYSICAL REVIEW B (2010)

Add to Collection

Article Physics, Multidisciplinary

Berry phase effects on electronic properties

Di Xiao et al.

REVIEWS OF MODERN PHYSICS (2010)

Add to Collection

Article Physics, Multidisciplinary

Quantum spin hall effect

BA Bernevig et al.

PHYSICAL REVIEW LETTERS (2006)

Add to Collection

© Peeref 2019-2024. All rights reserved.