@article{rosu-finsen2023ice,
author = {Alexander Rosu-Finsen and Michael B. Davies and Alfred Amon and Han Wu and Andrea Sella and Angelos Michaelides and Christoph G. Salzmann},
title = {Medium-density amorphous ice},
journal = {Science},
volume = {379},
number = {6631},
pages = {474-478},
year = {2023},
doi = {10.1126/science.abq2105},
url = {https://www.science.org/doi/abs/10.1126/science.abq2105},
urldate = {2023-02-03},
howpublished={\url{https://www.science.org/doi/pdf/10.1126/science.abq2105}},
abstract = {Amorphous ices govern a range of cosmological processes and are potentially key materials for explaining the anomalies of liquid water. A substantial density gap between low-density and high-density amorphous ice with liquid water in the middle is a cornerstone of our current understanding of water. However, we show that ball milling "ordinary" ice Ih at low temperature gives a structurally distinct medium-density amorphous ice (MDA) within this density gap. These results raise the possibility that MDA is the true glassy state of liquid water or alternatively a heavily sheared crystalline state. Notably, the compression of MDA at low temperature leads to a sharp increase of its recrystallization enthalpy, highlighting that H2O can be a high-energy geophysical material.},
}