Figure 2. Cu-centered SRDF at different temperatures (iso value : 0.081Å^-3).

T_m and T_g are the melting point and the glass transition temperatures, respectively. Different colors are used here to indicate different coordination shells: red (first shell, icosahedron), blue (second shell, dodecahedraon), green (third shell, icosahedron), and white (fourth shell, rhombic triacontrahedron). The parameter α is chosen to be 4.0Å^-2 to obtain optimal smoothness and resolution in the SRDF, but the resultant SRDF is not very sensitive to this parameter. The MRO at 300K can be seen to extend up to ∼15Å.