Pressure-induced high-temperature superconductivity in ternary Y–Zr–H compounds
Wendi Zhao, Hao Song, Mingyang Du, Qiwen Jiang, Tiancheng Ma, Ming Xu, Defang Duan, Tian Cui
Abstract
of 156 K and 185 K at 200 GPa, respectively. Further analysis shows that the phonon modes associated with H atoms contribute significantly to the electron-phonon coupling. The hydrogen content and the stoichiometric ratio of Y and Zr closely affect the density of states at the Fermi level, thereby affecting the superconductivity. Our work presents an important step toward understanding the superconductivity and stability of transition metal ternary hydrides.
Topics & Concepts
SuperconductivityTernary operationCondensed matter physicsCoupling (piping)PhononHydrogenHigh-temperature superconductivityElectronic structureMaterials scienceSuperconducting transition temperatureRoom-temperature superconductorChemistryPhysicsMetallurgyOrganic chemistryComputer scienceProgramming languageRare-earth and actinide compoundsHydrogen Storage and MaterialsNuclear Materials and Properties