【摘 要】
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The elastic anisotropy and superconductivity upon hydrostatic compression of α,ω,and β Hf are investigated using first-principle methods.The results of elast
【机 构】
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Institute of Theoretical Physics and Department of Physics,and Collaborative Innovation Center of Ex
论文部分内容阅读
The elastic anisotropy and superconductivity upon hydrostatic compression of α,ω,and β Hf are investigated using first-principle methods.The results of elastic anisotropies show that they increase with increasing pressure for α and ω phases,while decrease upon compression for β phase.The calculated superconducting transition temperatures are in excellent agreement with experiments.Electron-phonon coupling constants (λ) are increasing with pressure for α and ω phases,while decreasing for β phase.For β phase,the large values of λ are mainly due to the obvious TA1 soft mode.Under further compression,the TA1 soft vibrational mode will disappear gradually.
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