Magnetic skyrmions are topologically protected states that are very promising for the design of the next generation of ultralow-power electronic devices. In this letter, we propose a magnetic tunnel junction based spin-transfer torque diode with a magnetic skyrmion as ground state and a perpendicular polarizer patterned as nanocontact for a local injection of the current. The key result is the possibility to achieve sensitivities (i.e. detection voltage over input microwave power) larger than 2000V/W for optimized contact diameters. Our results can be very useful for the identification of a new class of spin-torque diodes with a non-uniform ground state.
@article{arxiv.1510.03841,
title = {Skyrmion based microwave detectors and harvesting},
author = {G. Finocchio and M. Ricci and R. Tomasello and A. Giordano and M. Lanuzza and V. Puliafito and P. Burrascano and B. Azzerboni and M. Carpentieri},
journal= {arXiv preprint arXiv:1510.03841},
year = {2016}
}