Compression-induced phase transitions in supercooled liquid and glassy confined germanene

V Van Hoang and NH Giang and V Bubanja, JOURNAL OF NANOPARTICLE RESEARCH, 27, 73 (2025).

DOI: 10.1007/s11051-025-06269-3

Compression-induced phase transitions in supercooled liquid and glassy confined germanene are studied via molecular dynamics (MD) simulations. Glassy state is obtained by cooling from the melt to 300 K under zero pressure. Then, some selected atomic configurations at temperatures above and below Tg\documentclass12ptminimal \usepackageamsmath \usepackagewasysym \usepackageamsfonts \usepackageamssymb \usepackageamsbsy \usepackagemathrsfs \usepackageupgreek \setlength\oddsidemargin-69pt \begindocument$$T_g$$\enddocument are taken as initial supercooled liquid or glassy two-dimensional (2D) models for the isothermal compression from low-density to high-density states in order to study compression-induced phase transitions in the models. We find formation of the triangular-hexa (trh) germanene as the most stable state in the high-density region. Moreover, we find the compression- induced amorphization of supercooled liquid and amorphous-amorphous phase transitions in the system.

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