Magnetic quantum oscillations in YBa${}_2$Cu${}_3$O${}_{6.61}$ and YBa${}_2$Cu${}_3$O${}_{6.69}$ in fields of up to 85 T; patching the hole in the roof of the superconducting dome

Abstract

We measure magnetic quantum oscillations in the underdoped cuprates YBa${}_2$Cu${}_3$O${}_{6+x}$ with $x=0.61$, 0.69, using fields of up to 85 T. The quantum-oscillation frequencies and effective masses obtained suggest that the Fermi energy in the cuprates has a maximum at $p\approx 0.11-0.12$. On either side, the effective mass may diverge, possibly due to phase transitions associated with the T=0 limit of the metal-insulator crossover (low-$p$ side), and the postulated topological transition from small to large Fermi surface close to optimal doping (high $p$ side).

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• The effect of the interlayer ordering on the Fermi surface of Kagome superconductor CsV${}_3$Sb${}_5$ revealed by quantum oscillations
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• Magnetic oscillations of in-plane conductivity in quasi-two-dimensional metals
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• Quantum Oscillation as Diagnostics of Pseudogap State in Underdoped Cuprates
• Fermi Surface Reconstruction by Dynamic Magnetic Fluctuations
• Fermi surfaces and quantum oscillations in underdoped high-Tc superconductors YBa2Cu3O6.5 and YBa2Cu4O8
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• Fermi Surface Reconstruction by Dynamic Magnetic Fluctuations and Spin-Charge Separation Near an O(3) Quantum Critical Point
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• Magnetic quantum oscillations and multiple holon pockets in underdoped YBa${}_2$Cu${}_3$O${}_{6+y}$
• Universality of the {\bf q}=1/2 Orbital Magnetism in the Pseudogap Phase of the High-$T_c$ superconductor $\mathrm{YB}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_{6+\mathrm{x}}$
• Scale-invariance as the cause of the superconducting dome in the cuprates
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• Quantum oscillations and criticality in a fermionic and bosonic dimer model for the cuprates