Fig. 3: Magnetization-direction-driven tunability of the prominent spectral features. | npj Quantum Materials

Fig. 3: Magnetization-direction-driven tunability of the prominent spectral features.

From: Plethora of tunable Weyl fermions in kagome magnet Fe3Sn2 thin films

Fig. 3

a Average dI/dV spectra and b second derivative of the spectra (d3I/dV3) acquired in a magnetic field applied parallel to the c-axis, offset for clarity. Symbols in (b) denote local minima in d3I/dV3 curves, corresponding to the peaks/kinks in the equivalent dI/dV spectra. Dashed lines serve as guides to the eye for the dispersions of local minima in field. Short bars on the left-bottom of each curve in (b) indicate the zero value for each curve. c Dispersion of spectral peaks in the magnetic field. The symbols in darker (brighter) colors are extracted from the data taken in positive (negative) fields. d Theoretically calculated Weyl node positions for magnetization saturated along the c-axis27. Waterfall plots of (e) dI/dV and f d3I/dV3 as a function of the magnetic field applied parallel to the c-axis, including the data acquired in negative fields (antiparallel to the c-axis), presented as intensity maps in different color scales for a better visualization. g Schematic of one scenario of Weyl node evolution and its effect on the density of states.

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