Extent of Fermi-surface reconstruction in the high-temperature superconductor HgBa₂CuO_4+δ.

ABSTRACT: High magnetic fields have revealed a surprisingly small Fermi surface in underdoped cuprates, possibly resulting from Fermi-surface reconstruction due to an order parameter that breaks translational symmetry of the crystal lattice. A crucial issue concerns the doping extent of such a state and its relationship to the principal pseudogap and superconducting phases. We employ pulsed magnetic-field measurements on the cuprate [Formula: see text]Cu[Formula: see text] to identify signatures of Fermi-surface reconstruction from a sign change of the Hall effect and a peak in the temperature-dependent planar resistivity. We trace the termination of Fermi-surface reconstruction to two hole concentrations where the superconducting upper critical fields are found to be enhanced. One of these points i

SUBMITTER: Chan MK 

PROVIDER: S-EPMC7211972 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature