Fig. 1: Schematic diagrams of the experimental method and the skyrmion-enhanced strain-mediated spintronic RC system. | Nature Communications

Fig. 1: Schematic diagrams of the experimental method and the skyrmion-enhanced strain-mediated spintronic RC system.

From: Experimental demonstration of a skyrmion-enhanced strain-mediated physical reservoir computing system

Fig. 1

The top panel shows the AHE measurement setup under a voltage sequence V(t), where the top and bottom surfaces are ground and voltage applied, respectively. The central light-yellow rectangle is the Hall bar whose size is 150 × 900 μm2. The physical reservoir is realized using the strain-mediated spintronic AHE device, which is confirmed as a nonlinear dynamic system. The Hall voltage Vxy is the output signal of this system. The yellow parts are Au electrodes for wire bonding and the grey part is conductive silver paint to minimize contact resistance. The bottom panel illustrates that the Mz (skyrmion size change) and ρxx both varies with the applied E-field due to the inverse piezoelectric effect, where in-plane compressive strain εin-plane < 0 is generated.

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