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Spontaneous Currents in Superconducting Systems with Strong Spin-Orbit Coupling.

S Mironov¹, A Buzdin²

¹Institute for Physics of Microstructures, Russian Academy of Sciences, 603950 Nizhny Novgorod, GSP-105, Russia.

Physical Review Letters

|March 4, 2017

Summary

Rashba spin-orbit coupling at superconductor-ferromagnet interfaces generates spontaneous currents. These currents create magnetic fields and influence critical field behavior, potentially forming Abrikosov vortices.

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Area of Science:

Condensed matter physics
Spintronics
Superconductivity

Background:

Rashba spin-orbit coupling is crucial in spintronic devices.
The interplay between superconductivity and ferromagnetism is key to novel electronic phenomena.

Purpose of the Study:

To investigate the effects of Rashba spin-orbit coupling at superconductor-ferromagnet interfaces.
To explore the resulting spontaneous currents and their magnetic consequences.

Main Methods:

Theoretical analysis of spin-orbit coupling effects.
Modeling of current generation and magnetic field induction.

Main Results:

Spontaneous currents arise in the atomic layer near the interface.
These currents induce magnetic fields and alter critical field properties.
Potential for spontaneous Abrikosov vortex generation is identified.

Conclusions:

Rashba spin-orbit coupling in superconductor-ferromagnet heterostructures leads to unique current-carrying states.
These states have significant implications for magnetic field generation and vortex dynamics.