Journal
NANO LETTERS
Volume 16, Issue 4, Pages 2522-2526Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.6b00070
Keywords
Two-dimensional boron; conventional superconductivity; electron-phonon coupling; first-principles calculations
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Funding
- Office of Naval Research [N00014-15-1-2372]
- Department of Energy BES [DE-SC0012547]
- DOE Office of Science [DE-AC02-05CH11231]
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Two-dimensional boron is expected to exhibit various structural polymorphs, all being metallic. Additionally, its small atomic mass suggests strong electron-phonon coupling, which in turn can enable superconducting behavior. Here we perform first-principles analysis of electronic structure, phonon spectra, and electron-phonon coupling of selected 2D boron polymorphs and show that the most stable structures predicted to feasibly form on a metal substrate should also exhibit intrinsic phonon-mediated superconductivity, with estimated critical temperature in the range of T-c approximate to 10-20 K.
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