Gate-defined JJ sensor in magic-angle twisted graphene resolves multi-vortex dynamics, with rates saturating below 80 mK suggestive of macroscopic quantum tunneling of individual Pearl vortices.
Since the relevant signal information is confined below 100 Hz, we apply a second-order digital low-pass filter with a cut- off off LP = 200 Hz
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Vortex Dynamics in Magic-Angle Twisted Graphene
Gate-defined JJ sensor in magic-angle twisted graphene resolves multi-vortex dynamics, with rates saturating below 80 mK suggestive of macroscopic quantum tunneling of individual Pearl vortices.