Non-relativistic torque and Edelstein effect in non-collinear magnets.

Area of Science:

• Condensed matter physics
• Materials science
• Spintronics

Background:

• Spin-orbit torque drives electrical control of magnetic materials.
• Conventional methods rely on spin-orbit coupling and heavy elements.

Purpose of the Study:

• Investigate current-induced torques in materials lacking spin-orbit coupling.
• Explore the Edelstein effect in non-collinear magnetic orders.

Main Methods:

• Group symmetry analysis
• Model calculations
• Simulations on selected compounds

Main Results:

• Identified non-collinear magnets exhibiting the Edelstein effect without spin-orbit coupling.
• Demonstrated current-driven torque comparable to conventional spin-orbit torque.
• Showcased torque in insulating materials for efficient magnetic control.

Conclusions:

• Non-collinear magnetic order offers an alternative route to current-induced torques.
• This discovery expands possibilities for electrical control of magnetism, particularly in insulators.