<div class="csl-bib-body">
<div class="csl-entry">Bui, T. A., Lamprecht, D., Madsen, J., Kurpas, M., Kotrusz, P., Markevich, A., Mangler, C., Kotakoski, J., Filipovic, L., Meyer, J. C., Pennycook, T. J., Skákalová, V., & Mustonen, K. (2025). Hexatic phase in covalent two-dimensional silver iodide. <i>Science</i>, <i>390</i>(6777), 1033–1037. https://doi.org/10.1126/science.adv7915</div>
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dc.identifier.issn
0036-8075
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/223587
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dc.description.abstract
According to the Kosterlitz-Thouless-Halperin-Nelson-Young (KTHNY) theory, the transition from a solid to liquid in two dimensions proceeds through an orientationally ordered liquid-like hexatic phase. However, alternative mixed melting scenarios, in which melting proceeds through the hexatic phase with both continuous and discontinuous transitions, have also been observed in some two-dimensional systems. In this study, we imaged silver iodide embedded in multilayer graphene using time- and temperature-resolved in situ atomic-resolution scanning transmission electron microscopy and nanobeam electron diffraction. We observed the hexatic phase and provide evidence supporting a mixed melting scenario.
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dc.description.sponsorship
FWF - Österr. Wissenschaftsfonds
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dc.description.sponsorship
FWF - Österr. Wissenschaftsfonds
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dc.language.iso
en
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dc.publisher
AMER ASSOC ADVANCEMENT SCIENCE
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dc.relation.ispartof
Science
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dc.subject
Hexatic phase
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dc.subject
Two-dimensional melting
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dc.subject
Covalent two-dimensional materials
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dc.subject
Silver iodide (AgI)
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dc.subject
Phase transitions
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dc.subject
In situ STEM
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dc.title
Hexatic phase in covalent two-dimensional silver iodide
