Extent of Fermi-surface reconstruction in the high-temperature superconductor HgBa${}_2$CuO${}_{4+\delta }$

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 this state and its relationship to the principal pseudogap and superconducting phases. We employ pulsed magnetic field measurements on the cuprate HgBa${}_2$CuO${}_{4+\delta }$ 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 is associated with the pseudogap end-point near optimal doping. These results connect the Fermi-surface reconstruction to both superconductivity and the pseudogap phenomena.

5 pages. 3 Figures. PNAS (2020)

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Cited by in corpus (11)

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• Magic gap ratio for optimally robust fermionic condensation and its implications for high-Tc superconductivity
• Enhanced superconducting pairing strength near a nonmagnetic nematic quantum critical point
• Test for BCS-BEC Crossover in the Cuprate Superconductors
• Observation of the Yamaji effect in a cuprate superconductor
• Charge order near the antiferromagnetic quantum critical point in the trilayer high $T_c$ cuprate HgBa${}_2$Ca${}_2$Cu${}_3$O${}_{8+\delta }$
• Doping Dependence of Upper Critical Field of High-Tc Cuprate Bi2+xSr2-xCaCu2O8+d Estimated from Irreversibility Field at Zero Temperature
• Calculations of Spin Fluctuation Spectral Functions ${\alpha }^{2}F$ in High-Temperature Superconducting Cuprates
• Yamaji effect in models of underdoped cuprates
• Yamaji effect and quantum oscillation in Yang-Rice-Zhang model of underdoped cuprates
• Landau Quasiparticles in Weak Power-Law Liquids