Figure 3
(a) Experimental set-up used to measure the acoustic voltage induced by the SAW, using no electric current. (b) Voltage induced in three different nanostrips of similar dimensions but made out of different materials, using the experimental set-up described in (a). The resistance of the nanostrips is 15 Ω, 80 Ω and 112 Ω for Gold, Nickel and FeCoB, respectively. A 2 nm layer of Pt caps the two ferromagnetic nanostrips. (c) Magnetoelastic voltage measured using the set-up described in (a) versus external magnetic field for different powers of the SAW. (d) AMR loop for no SAW, the same curve as in Fig. 1b. (e) Magnetoelastic voltage for 19 dBm, the same curve as the top one in (c). (f) Sum of the curve in (d) and (e), turning first (e) into resistance by dividing the data by the current used in the AMR measurement, \(-50 \, \upmu \text{A}\).
