Route to high-[Formula: see text] superconductivity of [Formula: see text] via strong bonding of boron-carbon compound at high pressure.

Abstract:

:We have analyzed the compositions of boron-carbon system, in which the [Formula: see text] compound is identified as structural stability at high pressure. The first-principles calculation is used to identify the phase diagram, electronic structure, and superconductivity of [Formula: see text]. Our results have demonstrated that the [Formula: see text] is thermodynamically stable in the diamond-like [Formula: see text] structure at a pressure above 244 GPa, and under temperature also. Feature of chemical bonds between B and C atoms is presented using the electron localization function. The strong chemical bonds in diamond-like [Formula: see text] structure are covalent bonds, and it exhibits the s-p hybridization under the pressure compression. The Fermi surface shape displays the large sheet, indicating that the diamond-like [Formula: see text] phase can achieve a high superconducting transition temperature ([Formula: see text]). The outstanding property of [Formula: see text] at 250 GPa has manifested very high-[Formula: see text] of superconductivity as 164 K, indicating that the carbon-rich system can induce the high-[Formula: see text] value as well.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Tsuppayakorn-Aek P,Yang X,Pluengphon P,Luo W,Ahuja R,Bovornratanaraks T

doi

10.1038/s41598-020-75049-x

subject

Has Abstract

pub_date

2020-10-22 00:00:00

pages

18090

issue

1

issn

2045-2322

pii

10.1038/s41598-020-75049-x

journal_volume

10

pub_type

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