Differentiated roles of Lifshitz transition on thermodynamics and superconductivity in La_2-xSr_xCuO₄.

ABSTRACT: The effect of Lifshitz transition on thermodynamics and superconductivity in hole-doped cuprates has been heavily debated but remains an open question. In particular, an observed peak of electronic specific heat is proposed to originate from fluctuations of a putative quantum critical point p* (e.g., the termination of pseudogap at zero temperature), which is close to but distinguishable from the Lifshitz transition in overdoped La-based cuprates where the Fermi surface transforms from hole-like to electron-like. Here we report an in situ angle-resolved photoemission spectroscopy study of three-dimensional Fermi surfaces in La_2-xSr_xCuO₄ thin films (x = 0.06 to 0.35). With accurate k_z dispersion quanti

SUBMITTER: Zhong Y 

PROVIDER: S-EPMC9371668 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature