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. 2015 Sep 16;5:14116. doi: 10.1038/srep14116

Figure 3. Vibrational density of states in superlattice S1, for a mass ratio mB/mA = 4 with mA = 0.4 and mB = 1.6.

Figure 3

In panels (af) we show the data corresponding to the repetitions period values W = 2,4,10,20,40,80. For comparison, we also plot gA(B)(ω) for the homogeneous bulk crystal composed by light (heavy) mA(B) masses only, together with the data for the glass and the disordered alloy formed by the same constituent species.