Effect of nitrogen doping and pressure on the stability of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>Lu</mml:mi><mml:msub><mml:mi mathvariant="normal">H</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>
Yang Sun, Feng Zhang, Shunqing Wu, Vladimir Antropov, Kai‐Ming Ho
Abstract
The near-ambient superconductivity of nitrogen-doped lutetium hydride remains a contentious topic. This paper discusses how pressure and nitrogen doping affect the stability of lutetium trihydride. The authors propose a structural model that illustrates improved stability by substituting hydrogen atoms with nitrogen and introducing vacancies. However, the study uncovers no theoretical evidence for strong electron-phonon coupling in these phases. These findings provide a possible way to understand the experimental structure and offer insights for future superconductivity investigations into this intriguing compound.
Topics & Concepts
LutetiumSuperconductivityNitrogenStability (learning theory)DopingCoupling (piping)HydrogenMaterials sciencePhysicsComputer scienceCondensed matter physicsMachine learningQuantum mechanicsMetallurgyYttriumOxideSuperconductivity in MgB2 and AlloysHigh-pressure geophysics and materialsHydrogen Storage and Materials