Fig. 6
Scaling of the boson peak frequency. The characteristic frequency \(A_4^{ - 1/5}\) versus the boson peak position ωBP. The line is a fit \(A_4^{ - 1/5}\sim \omega _{{\mathrm{BP}}}\) for glasses whose Tp < Tc, which is the parent temperature range where we see an increase in ωBP with decreasing Tp, see inset where the vertical dashed-dotted, dashed lines mark the positions of Tg and Tc, respectively
