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

Interference and Diffraction02:18

Interference and Diffraction

Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
Interference and Superposition of Waves01:07

Interference and Superposition of Waves

When two waves of the same nature occur in the same region simultaneously, they result in interference. Interference of waves implies that the net effect of the waves is the sum of the individual waves' effects. However, it does not imply that the individual waves affect the propagation of other waves.
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...

You might also read

Related Articles

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

Sort by
Same author

Isolated Proximal Femoral Valgus Osteotomy for Hinge Abduction Improves Femoroacetabular Relationship in Patients With Perthes Disease.

Clinical orthopaedics and related research·2026
Same author

Understanding Callus Types in Maize by Genetic Mapping and Transcriptional Profiling.

Plants (Basel, Switzerland)·2025
Same author

Coulomb Sensing of Single Ballistic Electrons.

Physical review letters·2025
Same author

High-frequency (> 65 MHz) broadband transparent transducer with ultrathin gold electrode for dual-mode photoacoustic and laser-induced ultrasound microscopy.

Photoacoustics·2025
Same author

Electron collision in a two-path graphene interferometer.

Science (New York, N.Y.)·2025
Same author

Author Correction: Coherent coupling between vortex bound states and magnetic impurities in 2D layered superconductors.

Nature communications·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: Jun 14, 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

Bilayer graphene interferometry: phase jump and wave collimation.

Sunghun Park1, H-S Sim

  • 1Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea.

Physical Review Letters
|April 7, 2010
PubMed
Summary
This summary is machine-generated.

Electrons exhibit an anomalous phase jump at a graphene potential step, explained by Berry phase effects. This phenomenon is robust and observable in a proposed interferometry setup.

More Related Videos

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
10:39

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Published on: October 11, 2016

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
12:14

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

Related Experiment Videos

Last Updated: Jun 14, 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

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
10:39

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Published on: October 11, 2016

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
12:14

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Quantum Mechanics

Background:

  • Bilayer graphene exhibits unique electronic properties due to its layered structure.
  • Electrons in graphene behave as massive Dirac fermions, possessing relativistic quantum mechanical properties.
  • Potential steps in graphene can lead to interesting phenomena in electron reflection and transmission.

Purpose of the Study:

  • To theoretically investigate the phase of the reflection amplitude of electrons at a lateral potential step in Bernal-stacked bilayer graphene.
  • To understand the origin of an anomalous phase jump observed in electron reflection.
  • To propose an experimental setup for observing this phenomenon.

Main Methods:

  • Theoretical study of electron reflection amplitude phase using quantum mechanical principles.
  • Analysis of the role of Berry phase and pseudospin in electron behavior.
  • Modeling of a lateral potential step created by electric gates in bilayer graphene.

Main Results:

  • An anomalous phase jump of pi was observed in the reflection amplitude as the electron incidence angle varied.
  • The jump is attributed to the Berry phase associated with the electron's pseudospin-1/2.
  • This Berry-phase effect remains robust even when a band gap is opened by electric gates.

Conclusions:

  • The study reveals a significant Berry-phase effect in electron reflection at graphene potential steps.
  • A robust pi phase jump provides a unique signature of this quantum mechanical phenomenon.
  • A proposed interferometry setup can experimentally verify the pi jump and identify collimation angles.