Wireless communication between two magnetic tunnel junctions acting as oscillator and diode

TL;DR

This paper demonstrates wireless communication between two magnetic tunnel junctions using spin-diode rectification, enabling detection of microwave emissions and modeling of their auto-oscillatory behavior for spintronic circuit design.

Contribution

It introduces a method for wireless detection of microwave signals between magnetic tunnel junctions and adapts an auto-oscillator model for spin-torque devices, advancing spintronic communication technology.

Findings

Rectified spin-diode voltage can be reconstructed from independent spectra.

The adapted auto-oscillator model accurately reproduces experimental features.

Results facilitate design of spintronic circuits with wireless communication.

Abstract

Magnetic tunnel junctions are nanoscale spintronic devices with microwave generation and detection capabilities. Here we use the rectification effect called "spin-diode" in a magnetic tunnel junction to wirelessly detect the microwave emission of another junction in the auto-oscillatory regime. We show that the rectified spin-diode voltage measured at the receiving junction end can be reconstructed from the independently measured auto-oscillation and spin diode spectra in each junction. Finally we adapt the auto-oscillator model to the case of spin-torque oscillator and spin-torque diode and we show that accurately reproduces the experimentally observed features. These results will be useful to design circuits and chips based on spintronic nanodevices communicating through microwaves.