High-temperature superconductivity in boron-carbon clathrates XYB<sub>6</sub>C<sub>6</sub>
ORAL
Abstract
Inspired by the recent synthesized boron-carbon clathrate SrB3C3 at 50 GPa with an estimated superconducting critical temperature (Tc) of 42 K, a number of the XYB6C6 systems are studied by substitution of Sr with other elements using first-principles density functional calculations. The dynamical stabilities, electronic structures and superconducting properties of these systems are analyzed at ambient conditions. Several XYB6C6 phases with a calculated Tc above 70 K are found. The phase stability is analyzed using the chemical pressure technique.
*We acknowledge support from the U.S. National Science Foundation (DMR-2132491 to E.Z.). This research was also supported by the U.S. Department of Energy (DOE), Office of Science, Nuclear Security Administration, through the Chicago-DOE Alliance Center under Cooperative Agreement Grant No. DE-NA0003975. Computations were carried out at the Center for Computational Research at the University at Buffalo.
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Presenters
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Nisha Geng
- University at buffalo