Rectification of radio frequency current in ferromagnetic nanowire

TL;DR

This paper demonstrates RF current rectification in a ferromagnetic nanowire via resonant spin wave excitation, revealing a spin torque diode effect similar to that in magnetic tunnel junctions.

Contribution

It introduces a novel method for RF current rectification using a single-layer magnetic nanowire, expanding the understanding of spin torque diode effects.

Findings

Resonant DC voltage generated by RF current in nanowire.

Rectification attributed to resonant spin wave excitation.

Mechanism similar to spin torque diode effect in tunnel junctions.

Abstract

We report the rectification of a constant wave radio frequency (RF) current by using a single-layer magnetic nanowire; a direct-current voltage is resonantly generated when the RF current flows through the nanowire. The mechanism of the rectification is discussed in terms of the spin torque diode effect reported for magnetic tunnel junction devices and the rectification is shown to be direct attributable to resonant spin wave excitation by the RF current.