Fig. 3: Ab initio simulations results for vibrational modes in amorphous Si and its alloys. | Nature Communications

Fig. 3: Ab initio simulations results for vibrational modes in amorphous Si and its alloys.

From: Tuning network topology and vibrational mode localization to achieve ultralow thermal conductivity in amorphous chalcogenides

Fig. 3: Ab initio simulations results for vibrational modes in amorphous Si and its alloys.The alternative text for this image may have been generated using AI.

a, d, g Vibrational density of states DOS, b, e, h modes diffusivity, and c, f, i inverse participation ratio (IPR) as a function of frequency for amorphous silicon, a-Si, amorphous silicon heavy-oxide, a-Si127O2, and amorphous silicon telluride, a-Si20Te80, respectively. The corresponding thermal conductivity is given for each system. The shift in the mobility edge with respect to the a-Si is depicted by an arrow.

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