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Related Experiment Video

Updated: Feb 4, 2026

Dissociation of the Confounding Influences of Expectancy and Integrative Difficulty Residing in Anomalous Sentences in Event-related Potential Studies

Dissociation of the Confounding Influences of Expectancy and Integrative Difficulty Residing in Anomalous Sentences in Event-related Potential Studies

Published on: May 9, 2019

Anomalous Hall Effect in 2D Dirac Materials.

Manuel Offidani¹, Aires Ferreira¹

¹Department of Physics, University of York, York YO10 5DD, United Kingdom.

Physical Review Letters

|October 9, 2018

Summary

We developed a theory for charge transport in 2D Dirac systems. Our findings reveal a robust anomalous Hall effect and spin accumulation, offering new ways to control spin currents in ferromagnetic materials.

Area of Science:

Condensed Matter Physics
Spintronics
Materials Science

Background:

Understanding charge carrier transport in two-dimensional (2D) systems with broken symmetries is crucial for next-generation electronics.
Ferromagnetic graphene and similar materials exhibit unique electronic properties due to broken mirror inversion and time-reversal symmetries.

Purpose of the Study:

To present a unified theoretical framework for charge carrier transport in 2D Dirac systems with broken symmetries.
To identify robust signatures of magnetized 2D Dirac fermions and explore novel spin transport mechanisms.

Main Methods:

Theoretical modeling of charge carrier transport.
Analysis of spin-orbit effects and their entanglement with spin and pseudospin degrees of freedom.
Investigation of impurity scattering and skew scattering mechanisms.

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Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

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Optimization, Test and Diagnostics of Miniaturized Hall Thrusters

Optimization, Test and Diagnostics of Miniaturized Hall Thrusters

Published on: February 16, 2019

Related Experiment Videos

Last Updated: Feb 4, 2026

Dissociation of the Confounding Influences of Expectancy and Integrative Difficulty Residing in Anomalous Sentences in Event-related Potential Studies

Dissociation of the Confounding Influences of Expectancy and Integrative Difficulty Residing in Anomalous Sentences in Event-related Potential Studies

Published on: May 9, 2019

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

Published on: January 21, 2016

Optimization, Test and Diagnostics of Miniaturized Hall Thrusters

Optimization, Test and Diagnostics of Miniaturized Hall Thrusters

Published on: February 16, 2019

Main Results:

A distinctive, sign-changing anomalous Hall conductivity dependent on gate voltage, robust against impurity scattering, is predicted.
A novel, gate-tunable extrinsic spin Hall effect driven by skew scattering and modulated by band spin texture is unveiled.
This mechanism leads to net spin accumulation at sample boundaries, even with spin-transparent disorder.

Conclusions:

The predicted anomalous Hall conductivity serves as a robust experimental signature for magnetized 2D Dirac fermions.
The unveiled extrinsic spin Hall effect offers new avenues for controlling spin currents in 2D ferromagnetic materials.
The theoretical framework provides fundamental insights into quantum transport phenomena in systems with broken symmetries.