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Updated: Aug 28, 2025

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Published on: February 20, 2020
Stability and electronic properties of gallenene
Alex Kutana1, Tariq Altalhi2, Qiyuan Ruan1
1Department of Materials Science and NanoEngineering, Rice University Houston Texas 77005 USA.
Abstract:
Two-dimensional metals offer intriguing possibilities to explore the metallic and other related properties in systems with reduced dimensionality. Here, following recent experimental reports of synthesis of two-dimensional metallic gallium (gallenene) on insulating substrates, we conduct a computational search of gallenene structures using the Particle Swarm Optimization algorithm, and identify stable low energy structures. Our calculations of the critical temperature for conventional superconductivity yield values of ∼7 K for gallenene. We also emulate the presence of the substrate by introducing the external confining potential and test its effect on the structures with unstable phonons.
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