Evolution of the gaps through the cuprate phase-diagram

Abstract

The actual physical origin of the gap at the antinodes, and a clear identification of the superconducting gap are fundamental open issues in the physics of high-$T_c$ superconductors. Here, we present a systematic electronic Raman scattering study of a mercury-based single layer cuprate, as a function of both doping level and temperature. On the deeply overdoped side, we show that the antinodal gap is a true superconducting gap. In contrast, on the underdoped side, our results reveal the existence of a break point close to optimal doping below which the antinodal gap is gradually disconnected from superconductivity. The nature of both the superconducting and normal state is distinctly different on each side of this breakpoint.

References in corpus (26)

• Angle-resolved photoemission spectroscopy of the cuprate superconductors
• The pseudogap in high-temperature superconductors: an experimental survey
• Hidden Order in the Cuprates
• Destruction of the Fermi Surface in Underdoped High Tc Superconductors
• Scanning tunneling spectroscopy of high-temperature superconductors
• Inelastic Light Scattering From Correlated Electrons
• The doping dependence of T* - what is the real high-Tc phase diagram?
• Non Fermi-Liquid States and Pairing of a general Model of Copper-Oxide Metals
• The pseudogap: friend or foe of high Tc?
• Distinct Fermi-Momentum Dependent Energy Gaps in Deeply Underdoped Bi2212
• Two Energy Scales and two Quasiparticle Dynamics in the Superconducting State of Underdoped Cuprates
• Phenomenology of Photoemission Lineshapes of High Tc Superconductors
• Evidence for two energy scales in the superconducting state of optimally doped (Bi,Pb)2(Sr,La)2CuO6+d
• Evidence for complex order parameter in La_{1.83}Sr_{0.17}CuO_4
• Evolution of Magnetic and Superconducting Fluctuations with Doping of High-Tc Superconductors
• Gap and pseudogap evolution within the charge-ordering scenario for superconducting cuprates
• Robust dx2-y2 pairing symmetry in high-temperature superconductors
• Spectroscopic distinction between the normal state pseudogap and the superconducting gap of cuprate high T_{c} superconductors
• Observation of an unconventional metal-insulator transition in overdoped CuO_2 compounds
• Phenomenological description of the two energy scales in underdoped superconducting cuprates
• Doping dependence of the electronic Raman spectra in cuprates
• The superconducting gap in the Hubbard model and the two gap energy scales in high-Tc cuprates
• Interplay between the pseudogap and superconductivity in HgBa${}_2$CuO${}_4$ single crystals
• Electronic Raman scattering in Tl2Ba2CuO6+x: symmetry of the order parameter, oxygen doping effects, and normal state scattering
• Two Distinct Electronic Contributions in the Fully Symmetric Raman Response of High $T_c$ Cuprates
• Resonant Raman scattering in mercurate single crystals

Cited by in corpus (32)

• Pseudogap opening and formation of Fermi arcs as an orbital-selective Mott transition in momentum space
• Two-stage metal-insulator transition in the 2D Hubbard model: momentum selectivity in the 8-site dynamical cluster approximation
• Isosbestic Points: Theory and Applications
• Intermediate Coupling Model of the Cuprates
• The nodal gap component as a good candidate for the superconducting order parameter in cuprates
• Critical charge fluctuations and emergent coherence in a strongly correlated excitonic insulator
• Signatures of Fermi surface reconstruction in Raman spectra of underdoped cuprates
• Vertical temperature-boundary of the pseudogap under the superconducting dome of the Bi2Sr2CaCu2O8+d phase-diagram
• New insights into the phase diagram of the copper oxide superconductors from electronic Raman scattering
• Quantitative Raman measurements of the evolution of the Cooper-pairs density with doping in Bi2Sr2CaCu2O8+d superconductors
• Relationship among superconductivity, pseudogap, and high-energy magnetic fluctuations in a model high-Tc superconductor from electronic Raman scattering
• Evidence for competition between the superconducting and the pseudogap state in (BiPb)_2(SrLa)_2CuO_{6+δ} from muon-spin rotation experiments
• Electronic Raman Scattering in copper oxide Superconductors: Understanding the Phase Diagram
• Unconventional high-energy-state contribution to the Cooper pairing in under-doped copper-oxide superconductor HgBa${}_2$Ca${}_2$Cu${}_3$O${}_{8+\delta }$
• Coherency of the superconducting state: the muon spin rotation and ARPES studies of (BiPb)_2(SrLa)_2CuO_{6+δ}
• Phase Competition and Anomalous Thermal Evolution in High-Temperature Superconductors
• Superconducting pairing and the pseudogap in nematic striped La2-xSrxCuO4
• Universal relationship between the energy scales of the pseudogap phase, the superconducting state and the charge density wave order in copper oxide superconductors
• Pseudogap Behavior Revealed in Interlayer Tunneling in Overdoped Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+x}$
• Sum-rules for Raman scattering off strongly correlated electron systems
• Incoherent superconductivity well above $T_c$ in high-$T_c$ cuprates - harmonizing the spectroscopic and thermodynamic data
• Doping and temperature dependence of electronic Raman response in cuprate superconductors
• Energy Scales in the Raman spectrum of electrons and hole doped cuprates within competing scenarios
• Electronic Raman response in electron-doped cuprate superconductors
• Pseudogap-induced anisotropic suppression of electronic Raman response in cuprate superconductors
• Pseudogap in cuprate and organic superconductors
• Energy gaps in high-$T_c$ superconductors: BCS after all?
• Spin singlet and quasiparticles excitations in cuprate superconductors
• Isotope Effect of Underdoped Cuprates in the Yang-Rice-Zhang Model
• Suppressed antinodal coherence with a single d-wave superconducting gap leads to two energy scales in underdoped cuprates
• Variational Monte Carlo study of spin dynamics in underdoped cuprates
• New pairing mechanism via chiral electron-hole condensation for non-BCS superconductivity