Extended Data Fig. 5: Crystal structure, calculated Fermi surfaces, experimental methods, and dHvA spectra in the (001) and (\(\overline{{\bf{1}}}\overline{{\bf{1}}}{\bf{0}}\)) planes.
From: Symmetry-enforced topological nodal planes at the Fermi surface of a chiral magnet
a, Crystal structure of MnSi. b, Fermi surface as calculated within local spin density approximation without rigid band shifts. c, Calculated Fermi surface neglecting spin–orbit coupling. d, Calculated Fermi surface neglecting spin–orbit coupling and highlighting majority and minority spin. e, Sketch of the cantilever magnetometer chip with capacitive readout. f, Magnetic field dependence of the frequency fB(B) tracking the magnetic-field dependence of the unsaturated magnetization in the field-polarized phase. The frequency f(B) observed corresponds to the zero-field intercept of the tangent to fB(B). g, Experimental dHvA frequency branches (crosses) for rotation in the (001) and (\(\overline{1}\overline{1}0\)) planes together with the theory (lines) matched to the experiment. See Supplementary Note 5 for details.
