Fig. 2: Non-local magnon transport and gap suppression.
a, Non-local a.c. voltage VNL measured between contacts 5 and 6 as a function of top-gate filling factor νTG and d.c. bias Vd.c. applied across contacts 2 and 3. A non-local voltage appears near ±EZ (black dotted lines) in accordance with the standard picture of magnon transport. b, Change in the measured ν = 1 energy gap as a function of Vd.c. and νTG. The value of ΔGap is calculated at each point by subtracting the average of the gap values at |Vd.c.| < EZ. As in the case of VNL, changes are only observed for EZ < |Vd.c.| and 0 < |νTG|< 2. c, Line traces from b showing the sharp disappearance of gap suppression near νTG = 0.
