<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>La</mml:mi><mml:msub><mml:mi>BH</mml:mi><mml:mn>8</mml:mn></mml:msub></mml:mrow></mml:math> : Towards high- <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>T</mml:mi><mml:mi>c</mml:mi></mml:msub></mml:math> low-pressure superconductivity in ternary superhydrides

In the last five years a large number of new high-temperature superconductors have been predicted and experimentally discovered among hydrogen-rich crystals, at pressures which are way too high to meet any practical application. this work, we report computational prediction hydride superconductor, LaBH$_{8}$, with T$_{c}$ 126 K pressure 50 GPa, thermodynamically stable above 100 dynamically down 40 an unprecedentedly low for high-T$_{c}$ hydrides. LaBH$_{8}$ can be seen as ternary sodalite-like hydride, in metallic hydrogen sublattice is stabilized by chemical exerted guest elements. The combination two elements different atomic sizes realizes more efficient packing atoms than binary sodalite A suitable choice may exploited further reduce stabilization ambient conditions.