  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.

Mesoscale and Nanoscale Physics