Abstract
We have searched for anomalous internal magnetic fields in highT c materials which are predicted to occur in anyon and flux phase models of superconductivity. The magnitude, anisotropy and temperature dependence of the observed fields inc-axis oriented samples of sintered YBa2CuO3O7 and of thick-film Bi2Sr2CaCu2O8 are consistent with a conventional nuclear dipolar origin. An upper limit of ≲0.08 mT is set for any anomalous magnetic fields along thec-axis atμ + sites in bulk CuO2 superconductors.
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Kiefl, R.F., Brewer, J.H., Affleck, I. et al. Search for magnetic fields due to anyons in high-T c superconductors. Hyperfine Interact 63, 139–144 (1991). https://doi.org/10.1007/BF02395996
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DOI: https://doi.org/10.1007/BF02395996