Marco Dirindin^1*, Daniele Coslovich^1*

1 Dipartimento di Fisica, Università di Trieste, Strada Costiera 11, 34151, Trieste, Italy

* Corresponding authors emails: marco.dirindin@phd.units.it, dcoslovich@units.it

DOI10.24435/materialscloud:5b-bc [version v1]

Publication date: Oct 16, 2024

How to cite this record

Marco Dirindin, Daniele Coslovich, Glassy dynamics and crystalline local order in two-dimensional amorphous silica, Materials Cloud Archive 2024.165 (2024), https://doi.org/10.24435/materialscloud:5b-bc

Description

We reassess the modeling of amorphous silica bilayers as a two-dimensional classical system whose particles interact with an effective pairwise potential. We show that it is possible to reparameterize the potential developed by Roy, Heyde, and Heuer to quantitatively match the structural details of the experimental samples. We then study the glassy dynamics of the reparameterized model at low temperatures. Using appropriate cage-relative correlation functions, which suppress the effect of Mermin-Wagner fluctuations, we highlight the presence of two well-defined Arrhenius regimes separated by a narrow crossover region, which we connect to the thermodynamic anomalies and the changes in the local structure. We find that the bond-orientational order grows steadily below the crossover temperature and is associated to transient crystalline domains of nanometric size. These findings raise fundamental questions about the nature of glass structure in two dimensions and provide guidelines to interpret the experimental data. This dataset is associated with "Glassy dynamics and crystalline local order in two-dimensional amorphous silica", Marco Dirindin and Daniele Coslovich (2024) [arXiv:2410.10500]. It includes scripts and data files to allow for the replication of the figures. The EPS figures in the Figures folder were generated using gnuplot version 5.4.

Materials Cloud sections using this data

Files

File name	Size	Description
Data.zip MD5md5:773287ce5e7cba606afddd7b3bd8ab07	10.0 MiB	Folder with the data required for the figures
Figures.zip MD5md5:2d57f6de5ace1e5146dbb18eaccce475	976.0 KiB	Folder with the compiled figures in .eps format
README.txt MD5md5:e8506789c05e359bdb28988d7f6eb1f4	422 Bytes	Brief dataset description
make.sh MD5md5:bda2ce73e39957adb3100d18edffb585	48 Bytes	Script to compile everything
_gnuplot_defaults.plt MD5md5:c05f7bc63bb7eca5d98796e9deb39556	1.4 KiB	Defaults instructions for every plot
_palette_bop_periodic_2pi.plt MD5md5:4335bd32fcccbc501d18d83ca1bfa508	155.4 KiB	Palette blue-orange-purple periodic
_palette_vary_T.plt MD5md5:df6f1bd5b348a117089140d94e45a4fe	418 Bytes	Palette red-grey-blue
fig1.plt MD5md5:bccc3df72a0c34421f4553abc5540796	1.3 KiB	Instruction for Fig. 1
fig2.plt MD5md5:bfca5bbc74c3f0ff818e6a6121baa57a	1.3 KiB	Instruction for Fig. 2
fig3.plt MD5md5:83702c36ed9b0139afafc2441212f5fb	3.3 KiB	Instruction for Fig. 3
fig4.plt MD5md5:f3d016d5210a5ed0de644ac0a86a442d	1.7 KiB	Instruction for Fig. 4
fig5.plt MD5md5:a50a06130db29ed8a2adf5dcf13fbe2d	3.5 KiB	Instruction for Fig. 5
fig6.plt MD5md5:99a50bd317bbd5fb2007c8e76bfc7b0a	1.3 KiB	Instruction for Fig. 6
fig7.plt MD5md5:48f297ab28e542ae4259edf22f9e3c00	4.9 KiB	Instruction for Fig. 7
fig8.plt MD5md5:1faf23f2de96a45002f20f477ee73ea4	2.9 KiB	Instruction for Fig. 8
fig9.plt MD5md5:e108801921bea4e21d4d9e4c3ea73e6c	2.7 KiB	Instruction for Fig. 9
fig10.plt MD5md5:eb0a0bdf3be4ea34767755529ad83023	3.5 KiB	Instruction for Fig. 10
fig11.plt MD5md5:6cd1844f87bd8db54eaa0bcc0cb20760	1.7 KiB	Instruction for Fig. 11
fig12.plt MD5md5:e614a942113c93a154abd1c2a5aeade2	2.8 KiB	Instruction for Fig. 12
fig13.plt MD5md5:b53ab1a227a9c32a04cc9cb3b6240a0d	2.5 KiB	Instruction for Fig. 13
fig14.plt MD5md5:8044ad26961aebcc4ab6b08f82170a99	1.4 KiB	Instruction for Fig. 14
fig15.plt MD5md5:b5d2273d076e1523554ebdf64e68f67e	1.2 KiB	Instruction for Fig. 15

License

Files and data are licensed under the terms of the following license: Creative Commons Attribution 4.0 International.
Metadata, except for email addresses, are licensed under the Creative Commons Attribution Share-Alike 4.0 International license.

External references

Keywords

2D materials glass transition silica bilayer