Hard BN Clathrate Superconductors.
J Phys Chem Lett
; 10(10): 2554-2560, 2019 May 16.
Article
en En
| MEDLINE
| ID: mdl-31046286
ABSTRACT
The search for hard superconductive materials has attracted a great deal of attention due to their fundamentally interesting properties and potentially practical applications. Here we predict a new class of materials based on sodalite-like BN frameworks, X(BN)6, where X = Al, Si, Cl, etc. Our simulations reveal that these materials could achieve high superconducting critical temperatures ( Tc) and high hardness. Electron-phonon calculations indicate that Tc of these compounds varies with the doping element. For example, the superconducting Tc of sodalite-like Al(BN)6 is predicted to reach â¼47 K, which is higher than that in the renowned MgB2 (39 K). This phase and a series of other sodalite-based superconductors are predicted to be metastable phases but are dynamically stable as well. These doped sodalite-based structures are likely to become recoverable as potentially useful superconductors with high hardness. Our current results present a new strategy for searching for hard high- Tc materials.
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01-internacional
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MEDLINE
Idioma:
En
Revista:
J Phys Chem Lett
Año:
2019
Tipo del documento:
Article
País de afiliación:
China