Nematic ordering in hydrogen hydrates at high pressure and low temperature
Gas hydrates have received considerable attention in the last decades due to their extensive natural occurrence on Earth and extraterrestrial bodies, and to their significant applications in sustainable technologies. In particular, hydrogen hydrate (HH) drew attention of scientists as one of the most promising materials for hydrogen storage. DFT simulations performed by our group indicate that HH in the C2 phase, its stable phase above 2.5 GPa, is characterized by nematic ordering of the hydrogen molecules at temperatures below 80 K. Nematic order plays a prominent role in disparate material classes such as the cuprates, some ruthenates or the iron-based compounds and may be interrelated with superconductivity, but has never been observed in gas hydrates. Here we propose to investigate the H2 rotational dynamics in H2-D2O samples in the C2 phase at 3, 5 and 8 GPa in the 5 to 100 K range by using the HP-QENS technique developed in the past years by our group in order to characterise the predicted nematic state.
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The recommended format for citing this dataset in a research publication is in the following format:
Livia Eleonora Bove; ANDRIAMBARIARIJAONA Leon; R. Gaal; KLOTZ Stefan; KOZA Michael Marek; NICHOLLS Alasdair; OLLIVIER Jacques and RESCIGNO Maria. (2023). Nematic ordering in hydrogen hydrates at high pressure and low temperature. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.7-03-232
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