Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

"An Unequal Two-Way Endeavor": Building Harmonious Collaboration Between Itinerant Speech-Language Pathologists and Teachers.

Language, speech, and hearing services in schools·2026
Same author

Strain and twist angle driven electronic structure evolution in twisted bilayer graphene.

Reports on progress in physics. Physical Society (Great Britain)·2026
Same author

Quantized Transport of ν=2/3 Fractional Quantum Hall Edge with Disordered Superconducting Proximity.

Physical review letters·2026
Same author

Many-Body Non-Hermitian Skin Effect with Exact Steady States in the Dissipative Quantum Link Model.

Physical review letters·2026
Same author

Generalized Gibbs Ensemble from Eigenstate Entanglement Hamiltonian.

Physical review letters·2025
Same author

Inhomogeneous Quantum Quenches of Conformal Field Theory with Boundaries.

Physical review letters·2025
Same journal

Erratum: Bacterial Turbulence at Compressible Fluid Interfaces [Phys. Rev. Lett. 136, 138301 (2026)].

Physical review letters·2026
Same journal

Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders.

Physical review letters·2026
Same journal

Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols.

Physical review letters·2026
Same journal

Topological Transition and Emergence of Elasticity of Dislocation in Skyrmion Lattice: Beyond Kittel's Magnetic-Polar Analogy.

Physical review letters·2026
Same journal

Pound-Drever-Hall Method for Superconducting-Qubit Readout.

Physical review letters·2026
Same journal

Coupling a ^{73}Ge Nuclear Spin to an Electrostatically Defined Quantum Dot in Silicon.

Physical review letters·2026
See all related articles

Related Experiment Video

Updated: Mar 3, 2026

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices
11:24

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices

Published on: July 11, 2025

16.7K

Intervalley-Coupled Twisted Bilayer Graphene from Substrate Commensuration.

Bo-Ting Chen1, Michael G Scheer1, Biao Lian1

  • 1Princeton University, Department of Physics, Princeton, New Jersey 08544, USA.

Physical Review Letters
|March 1, 2026
PubMed
Summary
This summary is machine-generated.

Researchers induced intervalley coupling in twisted bilayer graphene (TBG) using specific substrates. This creates tunable topological flat bands, offering a new platform for strongly correlated topological states.

More Related Videos

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
11:42

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

16.1K
Preparation and Characterization of C60/Graphene Hybrid Nanostructures
08:40

Preparation and Characterization of C60/Graphene Hybrid Nanostructures

Published on: May 15, 2018

10.1K

Related Experiment Videos

Last Updated: Mar 3, 2026

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices
11:24

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices

Published on: July 11, 2025

16.7K
Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
11:42

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

16.1K
Preparation and Characterization of C60/Graphene Hybrid Nanostructures
08:40

Preparation and Characterization of C60/Graphene Hybrid Nanostructures

Published on: May 15, 2018

10.1K

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Quantum Chemistry

Background:

  • Twisted bilayer graphene (TBG) exhibits unique electronic properties due to interlayer coupling.
  • Flat bands in TBG are crucial for observing strongly correlated phenomena.
  • Controlling intervalley coupling is key to engineering topological states.

Purpose of the Study:

  • To investigate the induction of intervalley coupling in TBG via commensurate insulating substrates.
  • To explore the hybridization of TBG flat bands into a tunable four-band model.
  • To identify substrate materials suitable for realizing these topological states.

Main Methods:

  • Utilizing commensurate insulating triangular Bravais lattice substrates to align with graphene.
  • Modeling the hybridization of TBG flat bands into a p_{x}-p_{y} orbital honeycomb lattice model.
  • Analyzing the effects of spin-orbit coupling from the substrate on band topology.

Main Results:

  • Intervalley coupling folds TBG valleys to the Γ-point, hybridizing flat bands.
  • The resulting four-band model exhibits quadratic band touchings and geometrically frustrated flat bands.
  • Spin-orbit coupling opens gaps, creating topological bands with spin Chern numbers up to ±4.
  • Minimal bandwidths are achieved near the magic angle (1.05°) for realistic substrate potentials.

Conclusions:

  • Sb_{2}Te_{3} and GeSb_{2}Te_{4} are identified as promising substrate candidates.
  • These engineered TBG systems offer a platform for exploring strongly correlated topological states.
  • Geometric frustration plays a significant role in achieving flat bands and topological properties.