Abstract
We use a paramagnetic salt TbF3 with a DC SQUID to search for a possible anomalous spin-spin interaction of two rotating HoFe3 polarized bodies with the TbF3 paramagnetic salt. We set limits on the electron-electron spin interaction and the electron-nucleus spin interaction. In terms of a standard dipole-dipole form, the limits are (−2.1 ±3.5)×10−14 for the anomalous spin-spin interaction of electrons in terms of the interaction strength between the magnetic moments of the electrons, and (−2.1±3.6)×10−8 for the anomalous spin-spin interaction between the electron and the Ho-nucleus in terms of the interaction strength between the magnetic moments of the electron and the Ho-nucleus.
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