Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

The Electrical Double Layer

The Electrical Double Layer

In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...

Biasing of Metal-Semiconductor Junctions

Biasing of Metal-Semiconductor Junctions

Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...

You might also read

Related Articles

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

Sort by

Same author

Twist-controlled modulation of quantum emitters in hexagonal boron nitride.

Science advances·2026

Same author

Strain-Driven Altermagnetic Spin-Splitting Effect in RuO<sub>2</sub>.

Nano letters·2026

Same author

Electric field-induced Kerr rotation on metallic surfaces.

Physical review. B·2026

Same author

Strain-stabilized interfacial polarization tunes work function over 1 eV in RuO<sub>2</sub>/TiO<sub>2</sub> heterostructures.

Nature communications·2026

Same author

Ultrastrong Plasmon-Phonon Coupling Enabled by Acoustic Graphene Plasmons.

Nano letters·2025

Same author

Generalized Energy Band Alignment Model for van der Waals Heterostructures with a Charge Spillage Dipole.

ACS nano·2025

Search research articles

Related Experiment Video

Updated: May 29, 2026

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

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

Published on: July 11, 2025

Metallic Electrooptic Effect in Twisted Double-Bilayer Graphene.

D J P de Sousa¹, N Roldan-Levchenko², C O Ascencio²

¹Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States.

|May 28, 2026

Summary

This summary is machine-generated.

Researchers discovered a new electro-optic (EO) mechanism in metals using Berry curvature and orbital magnetic moments. This offers a tunable platform for ultrafast optical control in quantum materials like twisted double-bilayer graphene (TDBG).

Keywords:

Berry curvature Twisted double-bilayer graphene magnetoelectric electro-optic effect moiré materials orbital magnetic moment terahertz circular dichroism

More Related Videos

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Electric-field Control of Electronic States in WS₂ Nanodevices by Electrolyte Gating

Published on: April 12, 2018

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

Related Experiment Videos

Last Updated: May 29, 2026

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

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

Published on: July 11, 2025

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Electric-field Control of Electronic States in WS₂ Nanodevices by Electrolyte Gating

Published on: April 12, 2018

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

Area of Science:

Condensed matter physics
Quantum materials science
Optoelectronics

Background:

Theoretical advances highlight Bloch state properties for unconventional electro-optic (EO) phenomena in metals.
Novel strategies for dynamic optical control in quantum materials are emerging.
Berry curvature and orbital magnetic moments are key intrinsic properties of Bloch electrons.

Purpose of the Study:

Identify an alternative EO mechanism in bulk metallic systems.
Investigate the role of Berry curvature and orbital magnetic moment interplay.
Focus on twisted double-bilayer graphene (TDBG) as a model system.

Main Methods:

Theoretical calculations focusing on TDBG.
Analysis of moiré Bloch bands and their intrinsic properties.
Investigation of linear magnetoelectric EO response and its relation to gyrotropic magnetic susceptibility.

Main Results:

Identified a novel EO mechanism driven by Berry curvature and orbital magnetic moment.
Demonstrated a sizable linear magnetoelectric EO response in TDBG.
Showcased dominance of this mechanism in C3z-symmetric TDBG, surpassing Berry curvature dipole (BCD) contributions.
Revealed giant, gate-tunable linear and circular dichroism in the terahertz (THz) regime.

Conclusions:

Established a robust and tunable platform for ultrafast EO modulation in 2D materials.
This mechanism provides a route beyond the BCD paradigm for EO effects.
TDBG serves as a promising material for advanced optical control applications.