When magnetic order is suppressed under pressure, a superconducting (SC) phase emerges in the ferromagnet UGe
2 and an extended non-Fermi liquid (NFL) regime is observed in the helimagnet MnSi. We report thermal expansion measurements of UGe
2 under pressure by means of neutron Larmor diffraction. We find a new, putatively non-magnetic transition at the temperature T
L at pressures close to the SC phase. In MnSi we report Hall effect measurements under pressure. We find a topological Hall effect, as the signature of a topologically non-trivial spin texture, above the critical pressure in the NFL regime.
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When magnetic order is suppressed under pressure, a superconducting (SC) phase emerges in the ferromagnet UGe
2 and an extended non-Fermi liquid (NFL) regime is observed in the helimagnet MnSi. We report thermal expansion measurements of UGe
2 under pressure by means of neutron Larmor diffraction. We find a new, putatively non-magnetic transition at the temperature T
L at pressures close to the SC phase. In MnSi we report Hall effect measurements under pressure. We find a topological Hall effect,...
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