Evidence for solitons in hydrogen-bonded systems

Abstract
Langevin-type finite-temperature simulations show that soliton mobility in hydrogen-bonded chains is a nonmonotonic function of temperature. In the temperature range of 170–240 K, soliton mobility initially increases, reaches a maximum at approximately 190 K, subsequently decreases to a minimum at approximately 210 K, and then increases again. This behavior is in qualitative agreement with experimental data for ice crystals in the same temperature range.