Lifshitz Transition and Superconductivity Enhancement in High Pressure $cI$16 Li
Chia-Hui Lin,
Tom Berlijn,
Wei Ku
Abstract:The Fermi surface topology of cI 16 Li at high pressures is studied using a recently developed first-principles unfolding method. We find the occurrence of a Lifshitz transition at ∼43 GPa, which explains the experimentally observed anomalous onset of the superconductivity enhancement toward lowered pressure. Furthermore we identify, in comparison with previous reports, additional nesting vectors that contribute to the cI 16 structural stability. Our study highlights the importance of three-dimensional unfoldi… Show more
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