Structural changes across thermodynamic maxima in supercooled liquid tellurium: a water-like scenario
| Autor: | Sun, Peihao, Monaco, Giulio, Zalden, Peter, Sokolowski-Tinten, Klaus, Antonowicz, Jerzy, Sobierajski, Ryszard, Kajihara, Yukio, Baron, Alfred Q. R., Fuoss, Paul, Chuang, Andrew Chihpin, Park, Jun-Sang, Almer, Jonathan, Hastings, J. B. |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | PNAS 119(28), e2202044119 (2022) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1073/pnas.2202044119 |
| Popis: | Liquid polymorphism is an intriguing phenomenon which has been found in a few single-component systems, the most famous being water. By supercooling liquid Te to more than 130 K below its melting point and performing simultaneous small-angle and wide-angle X-ray scattering measurements, we observe clear maxima in its thermodynamic response functions around 615 K, suggesting the possible existence of liquid polymorphism. A close look at the underlying structural evolution shows the development of intermediate-range order upon cooling, most strongly around the thermodynamic maxima, which we attribute to bond-orientational ordering. The striking similarities between our results and those of water, despite the lack of hydrogen-bonding and tetrahedrality in tellurium, indicate that water-like anomalies may be a general phenomenon among liquid systems with competing bond- and density-ordering. Comment: Main text: 10 pages, 5 figures; supplementary materials: 14 pages, 13 figures |
| Databáze: | arXiv |
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