Unveiling phase diagram of the lightly doped high-Tc cuprate superconductors with disorder removed

Abstract

The currently established electronic phase diagram of cuprates is based on a study of single- and double-layered compounds. These CuO${}_2$ planes, however, are directly contacted with dopant layers, thus inevitably disordered with an inhomogeneous electronic state. Here, we solve this issue by investigating a 6-layered Ba${}_2$Ca${}_5$Cu${}_6$O${}_{12}$(F,O)${}_2$ with inner CuO${}_2$ layers, which are clean with the extremely low disorder, by angle-resolved photoemission spectroscopy (ARPES) and quantum oscillation measurements. We find a tiny Fermi pocket with a doping level less than 1% to exhibit well-defined quasiparticle peaks which surprisingly lack the polaronic feature. This provides the first evidence that the slightest amount of carriers is enough to turn a Mott insulating state into a metallic state with long-lived quasiparticles. By tuning hole carriers, we also find an unexpected phase transition from the superconducting to metallic states at 4%. Our results are distinct from the nodal liquid state with polaronic features proposed as an anomaly of the heavily underdoped cuprates.

References in corpus (34)

• The pseudogap in high-temperature superconductors: an experimental survey
• Quantum Cluster Theories
• Long-range incommensurate charge fluctuations in (Y,Nd)Ba2Cu3O(6+x)
• Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3Oy
• Destruction of the Fermi Surface in Underdoped High Tc Superconductors
• Quantum oscillations and the Fermi surface in an underdoped high-Tc superconductor
• Discovery of microscopic electronic inhomogeneity in the high-Tc superconductor Bi2Sr2CaCu2O8+x
• Charge order driven by Fermi-arc instability in Bi2201
• From Fermi Arcs to the Nodal Metal: Scaling of the Pseudogap with Doping and Temperature
• Evaluation of CuO2 plane hole doping in YBa2Cu3O6+x single crystals
• Missing Quasiparticles and the Chemical Potential Puzzle in the Doping Evolution of the Cuprate Superconductors
• Nodal metallic behavior of lightly-doped La${}_{2-x}$Sr${}_x$CuO${}_4$
• Direct evidence for a competition between the pseudogap and high temperature superconductivity in the cuprates
• Phase competition in trisected superconducting dome
• Bilayer Splitting in the Electronic Structure of Heavily Overdoped Bi2Sr2CaCu2O8+d
• Universal sheet resistance and revised phase diagram of the cuprate high-temperature superconductors
• Anomalous electronic structure and pseudogap effects in Nd_1.85Ce_0.15CuO_4
• Universal quantum oscillations in the underdoped cuprate superconductors
• High-Tc Superconductivity and Antiferromagnetism in Multilayered Copper Oxides - A New Paradigm of Superconducting Mechanism -
• Loss of nodal quasiparticle integrity in underdoped YBa2Cu3O6+x
• Point nodes persisting far beyond Tc in Bi2212
• Direct spectroscopic evidence for phase competition between the pseudogap and superconductivity in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Imaging nanoscale Fermi surface variations in an inhomogeneous superconductor
• Disappearance of Nodal Gap across the Insulator-Superconductor Transition in a Copper-Oxide Superconductor
• Observation of a d-wave nodal liquid in highly underdoped Bi_2Sr_2CaCu_2O_{8+δ}
• Observation of small Fermi pockets protected by clean CuO2 sheets of a high-Tc superconductor
• Competition between antiferromagnetism and superconductivity, electron-hole doping asymmetry and "Fermi Surface" topology in cuprates
• Single reconstructed Fermi surface pocket in an underdoped single layer cuprate superconductor
• Characterization of halogen-bridged binuclear metal complexes as hybridized two-band materials
• Anomalous Quantum Transport Properties in Semimetallic Black Phosphorus
• Emergence of Quasiparticles in a Doped Mott Insulator
• High-Tc superconductivity and antiferromagnetism in multilayer cuprates: 63Cu- and 19F-NMR on five-layer Ba2Ca4Cu5O10(F,O)2
• Superconducting and Pseudogap Transition Temperatures in High-Tc Cuprates and the $T_c$ Dependence on Pressure
• Multilayered cuprate superconductor Ba${}_2$Ca${}_5$Cu${}_6$O${}_{12}$(O${}_{1-x}$,F${}_x$)${}_2$ studied by temperature-dependent scanning tunneling microscopy and spectroscopy

Cited by in corpus (10)

• Ab initio quantum many-body description of superconducting trends in the cuprates
• Feshbach hypothesis of high-Tc superconductivity in cuprates
• On the cuprates' universal waterfall feature: evidence of a momentum-driven crossover
• Scattering theory of mesons in doped antiferromagnetic Mott insulators: Multichannel perspective and Feshbach resonance
• Spin and bond-charge excitation spectra in correlated electron systems near antiferromagnetic phase
• Fractionalized Fermi liquids and the cuprate phase diagram
• Geometric orthogonal metals: Hidden antiferromagnetism and pseudogap from fluctuating stripes
• Ternary nickel hydrides: a new platform for unconventional superconductivity and quantum magnetism
• BCS-BEC crossover driven by small Fermi pockets of a high-Tc cuprate superconductor
• Persistent Fermi Pockets and Robust Electron Pairing in Lightly Doped CuO${}_2$ Planes of Cuprate Superconductors