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Updated: Jun 25, 2026

Magnetic Tweezers for the Measurement of Twist and Torque

Magnetic Tweezers for the Measurement of Twist and Torque

Published on: May 19, 2014

Inverse spin Hall effect driven by spin motive force.

Junya Shibata¹, Hiroshi Kohno

¹Kanagawa Institute of Technology, 1030 Shimo-Ogino Atsugi, Kanagawa 243-0292, Japan. shibata@gen.kanagawa-it.ac.jp

Physical Review Letters

|March 5, 2009

Summary

Researchers explored the inverse spin Hall effect in ferromagnetic conductors, finding that a spin motive force induces a charge Hall current. This effect is significantly enhanced compared to the conventional anomalous Hall effect.

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Area of Science:

Condensed Matter Physics
Spintronics
Materials Science

Background:

The spin Hall effect involves electric fields inducing spin currents.
Understanding inverse effects is crucial for spintronic devices.

Purpose of the Study:

To investigate the inverse spin Hall effect in ferromagnetic conductors.
To analyze charge Hall current generation from spin motive forces.

Main Methods:

Theoretical analysis considering skew-scattering and side-jump processes.
Incorporating spin-orbit interaction at impurities.
Modeling spin-dependent effective electric fields (E_s).

Main Results:

Derived Hall current density formula: sigma_SH * n x E_s.
Quantified spin Hall conductivity (sigma_SH).
Observed enhancement factor of P-2 compared to anomalous Hall effect.

Conclusions:

The spin motive force significantly induces charge Hall currents in ferromagnetic materials.
The inverse spin Hall effect shows enhanced Hall angles due to spin polarization (P).
Potential applications in domain-wall dynamics within ferromagnetic nanowires were estimated.