Figure 3: The density of states and energy gap distribution of MgB2.
From: Momentum-dependent multiple gaps in magnesium diboride probed by electron tunnelling spectroscopy
(a) The superconducting DOS of MgB2 at T=0 as derived from the tunnelling I–V curve (solid line) and calculated (dashed line) from ref. 1 (inset). The tunnelling I–V curve at T=1.8 K as measured (black line) and reconstructed (red squares) from the derived distribution of MgB2 energy-gap values. (b) The distribution of MgB2 energy-gap values at T=1.8 K derived from the superconducting DOS (bottom) compared with the theoretical results (top) of ref. 1.
