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Updated: Jan 23, 2026
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Optimization, Test and Diagnostics of Miniaturized Hall Thrusters
Published on: February 16, 2019
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Skyrmions and Hall transport
1Department of Physics, Loyola University Maryland, 4501 N. Charles Street, Baltimore, MD 21210, United States of America.
Summary
This study reveals Hall viscosity as a new physical quantity crucial for skyrmion Hall transport in materials. It explores theoretical breakthroughs and experimental advancements in conducting and insulating magnets.
Area of Science:
- Condensed matter physics
- Quantum field theory
- Spintronics
Background:
- Skyrmion Hall transport is critical in both insulating and conducting materials.
- Understanding its underlying physics requires advanced theoretical frameworks like quantum field theory.
- Broken parity symmetry is a key factor influencing this transport phenomenon.
Purpose of the Study:
- To review recent theoretical and experimental progress in skyrmion Hall transport.
- To introduce Hall viscosity as a newly discovered physical quantity.
- To bridge the understanding between quantum field theory and experimental observations.
Main Methods:
- Utilizing quantum field theory and ward identity for first-principles analysis.
- Applying symmetry and conservation laws to understand transport phenomena.
- Reviewing phenomenological approaches for spin torques and thermodynamic analysis for thermo-electromagnetic effects.
Main Results:
- Discovery of Hall viscosity, an anti-symmetric component of the viscosity tensor.
- Identification of broken parity symmetry's crucial role in skyrmion Hall transport.
- Comprehensive overview of spin torques and thermo-electromagnetic effects in magnetic materials.
Conclusions:
- Hall viscosity offers a new perspective on skyrmion Hall transport.
- Further experimental validation of Hall viscosity is proposed through Hall conductivity measurements.
- The review provides a self-contained resource for understanding complex magnetic phenomena.
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