The crystal structure and magnetic properties of YCo5 compound have been studied by neutron diffraction,in the pressure range 0≤p≤7.2 GPa.The cobalt moments decrease with pressure,parallelly with anisotropic changes...The crystal structure and magnetic properties of YCo5 compound have been studied by neutron diffraction,in the pressure range 0≤p≤7.2 GPa.The cobalt moments decrease with pressure,parallelly with anisotropic changes of lattice parameters.The experimental data are analyzed together with results from the combined Density Functional and Dynamical Mean-Field Theory.A rather good agreement between the experimentally determined and calculated values of cobalt moments is shown.Our scenario for the behavior of YCo5 under pressure,is the combined action of the Lifshitz transition with a strong local electron-electron interaction.展开更多
基金Ostlin,L.Chioncel acknowledges financial support offered by the Augsburg Center for Innovative Technologies,and by the Deutsche Forschungsgemeinschaft(through the project TRR 80/F6).E.Burzo and D.P.Kozlenko work was supported by the Project nr.38/theme04-4-1121-2015/2020The N.O.Golosova,S.E.Kichanov and B.N.Savenko also acknowledge support from the grant RFBR17-02-00112.
文摘The crystal structure and magnetic properties of YCo5 compound have been studied by neutron diffraction,in the pressure range 0≤p≤7.2 GPa.The cobalt moments decrease with pressure,parallelly with anisotropic changes of lattice parameters.The experimental data are analyzed together with results from the combined Density Functional and Dynamical Mean-Field Theory.A rather good agreement between the experimentally determined and calculated values of cobalt moments is shown.Our scenario for the behavior of YCo5 under pressure,is the combined action of the Lifshitz transition with a strong local electron-electron interaction.
