Fig. 4: Fluctuation-induced topological Hall effect in the transverse conical spiral state.
From: Fluctuation-driven topological Hall effect in room-temperature itinerant helimagnet Fe3Ga4
Comparison between Hall resistivity (ρyx) and magnetisation data at a 185 K and b 305 K. c Geometrical contribution (ρTHE) to the total Hall resistivity shown as a function of magnetic field between 200 K and 350 K, after subtracting the normal and anomalous contributions. d ρTHE as a function of temperature at two constant magnetic fields. The data were fitted with a linear function in Phase IV. Deviation from the linear behaviour, marked by shaded region signifies the appearance of Phase V. e Comparison between maximum of topological Hall resistivity (ρTHE) in various bulk magnets, among which some even host, as opposed to Fe3Ga4, skyrmion lattices. Data shown in (e) are taken from refs. 9,11,18,22,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52.
