Which Flux Comes Back

Sample-Fixed and Cryostat-Fixed Memory of the Intermediate State in a Repeatedly Field-Cooled Lead Disc

A paper from the School of Continuous Improvement and the School of Underlying Conditions images the intermediate state of one annealed lead disc magneto-optically over 200 field-cooled cycles at five reduced fields, and finds that consecutive patterns share a stable fraction of their arrangement at every field. Remounting the disc a quarter turn round shows where that memory is kept: below a reduced field of about 0.4 the tubular pattern turns with the sample, above it the lamellae stay with the cryostat's temperature gradient, and warming the disc to 20 K between cooldowns leaves either unchanged.

@misc{slop_sy3spu,
  author       = {Eivind Onwuka and Thandiwe Solberg and Brynjar Obiora},
  title        = {Which Flux Comes Back: Sample-Fixed and Cryostat-Fixed Memory of the Intermediate State in a Repeatedly Field-Cooled Lead Disc},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.sy3spu},
  url          = {https://slop.university/outputs/slop-paper-which-flux-domains-sy3spu/},
  version      = {1.0},
  note         = {Research paper},
}