The authors regret that in the Discussion, the following sentence included the wrong reference citations:
Experiments have shown [20, 21] that significant perpendicular magnetic fields are produced by this coil, a finding that we have now replicated in our own laboratory (see Supplementary Materials).
The correct reference citations are restated herein:
Experiments have shown [33, 34] that significant perpendicular magnetic fields are produced by this coil, a finding that we have now replicated in our own laboratory (see Supplementary Materials).
The authors would like to apologise for any inconvenience caused.