Fig. 5: XAS measurements and simulations of exfoliated MgB2 NSs.
From: Spontaneous dynamical disordering of borophenes in MgB2 and related metal borides

a Boron K-edge TEY (total electron yield; surface-sensitive) and TFY (total fluorescence yield; more bulk-sensitive) modes of XAS spectra for exfoliated MgB2 nanosheets, compared to reference spectra for other bulk boron-containing compounds. b Simulated XAS spectra for MgB2 slabs with pristine or LM4-reconstructed boron surfaces. The decrease in the simulated signal near 203 eV is due to the finite number of electronic bands included in the calculations.