1. Unrevealing the structure and properties of {$\alpha$}-sheet-based bilayer borophenes
- Author
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Rakshit, Subrata and Szwacki, Nevill Gonzalez
- Subjects
Condensed Matter - Materials Science ,Condensed Matter - Mesoscale and Nanoscale Physics - Abstract
Recent experimental realizations of bilayer boron materials motivated us to study the structure and properties of $\alpha$-sheet-based bilayer borophenes with interlayer covalent bonds. As shown here, at least three stacking variations are possible: AA, AB, and AB$'$. The on-top AA-stacking has been obtained experimentally. The AB-stacking is the most stable among neutral freestanding structures, whereas the AA and AB$'$ stacking sequences are very close in energy, both for neutral and negatively charged cases. The studied bilayer borophenes exhibit extraordinarily high electric conductivity with values as high as ${\sim} 10^7\mathrm{~S}/\mathrm{m}$ for the experimentally observed AA-stacking. The highly stable AB-stacking bilayer, reported here for the first time, exhibits an anisotropic conductivity with an average value of $6.0 \times 10^6~\mathrm{S/m}$., Comment: 5 pages, 5 figures, 1 table
- Published
- 2024