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Related Experiment Video

Updated: Jul 11, 2025

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

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Published on: November 21, 2019

Kinetic magnetism in triangular moiré materials.

L Ciorciaro¹, T Smoleński¹, I Morera^2,3

¹Institute for Quantum Electronics, ETH Zürich, Zürich, Switzerland.

|November 16, 2023

Summary

This summary is machine-generated.

Researchers found kinetic magnetism in van der Waals heterostructures, demonstrating electrical control of magnetic properties. This discovery offers new pathways for designing advanced magnetic materials and devices.

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Area of Science:

Condensed Matter Physics
Materials Science
Quantum Magnetism

Background:

Conventional magnetism arises from Coulomb exchange interactions.
Electrical control of magnetism is theoretically proposed but experimentally elusive.
Strongly correlated materials and Mott insulator states are key areas of research.

Purpose of the Study:

To experimentally demonstrate an alternative mechanism for magnetism.
To investigate magnetic correlations in MoSe2/WS2 van der Waals heterostructures near Mott insulator states.
To explore the potential for electrical control of magnetic properties.

Main Methods:

Fabrication and investigation of MoSe2/WS2 van der Waals heterostructures.
Creating Mott insulator states with electrons on a frustrated triangular lattice.
Measuring electronic magnetization via polarization-selective attractive polaron resonance.

Main Results:

Observed direct evidence of magnetic correlations originating from a kinetic mechanism.
Found ferromagnetic correlations in electron-doped Mott states.
Results align with the Nagaoka mechanism for magnetism.

Conclusions:

A kinetic mechanism contributes to magnetism in van der Waals heterostructures.
Electrical doping can induce ferromagnetic correlations, enabling magnetic control.
This work provides experimental validation for novel magnetism mechanisms.