A direct evidence of vibrationally delocalized response at ice surface
Tatsuya Ishiyama1, Akihiro Morita1
1Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan.
Abstract:
Surface-specific vibrational spectroscopic responses at isotope diluted ice and amorphous ice are investigated by molecular dynamics (MD) simulations combined with quantum mechanics/molecular mechanics calculations. The intense response specific to the ordinary crystal ice surface is predicted to be significantly suppressed in the isotopically diluted and amorphous ices, demonstrating the vibrational delocalization at the ordinary ice surface. The collective vibration at the ice surface is also analyzed with varying temperature by the MD simulation.
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