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arXiv · 1510.03841

Skyrmion based microwave detectors and harvesting

G. Finocchio·M. Ricci·R. Tomasello·A. Giordano·M. Lanuzza·V. Puliafito·P. Burrascano·B. Azzerboni·M. Carpentieri
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Abstract

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.

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G. Finocchio, M. Ricci, R. Tomasello, A. Giordano, M. Lanuzza, V. Puliafito, P. Burrascano, B. Azzerboni, M. Carpentieri. 2015-09-24. Skyrmion based microwave detectors and harvesting. https://doi.org/10.1063/1.4938539

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