Distinct Fermi-Momentum Dependent Energy Gaps in Deeply Underdoped Bi2212

Abstract

We use angle-resolved photoemission spectroscopy applied to deeply underdoped cuprate superconductors Bi2Sr2(Ca,Y)Cu2O8 (Bi2212) to reveal the presence of two distinct energy gaps exhibiting different doping dependence. One gap, associated with the antinodal region where no coherent peak is observed, increases with underdoping - a behavior known for more than a decade and considered as the general gap behavior in the underdoped regime. The other gap, associated with the near nodal regime where a coherent peak in the spectrum can be observed, does not increase with less doping - a behavior not observed in the single particle spectra before. We propose a two-gap scenario in momentum space that is consistent with other experiments and may contain important information on the mechanism of high-Tc superconductivity.

12 pages, 3 figures, submitted to Science

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Cited by in corpus (111)

• Electrodynamics of Correlated Electron Materials
• Visualizing pair formation on the atomic scale in the high-Tc superconductor Bi2Sr2CaCu2O8+d
• Two Gaps Make a High Temperature Superconductor?
• How Cooper pairs vanish approaching the Mott insulator in Bi2Sr2CaCu2O8+d
• Energy gaps in high-transition temperature cuprate superconductors
• From a single-band metal to a high-temperature superconductor via two thermal phase transitions (Supporting Material)
• From a single-band metal to a high-temperature superconductor via two thermal phase transitions
• Direct evidence for a competition between the pseudogap and high temperature superconductivity in the cuprates
• Phase competition in trisected superconducting dome
• Two energy gaps and Fermi surface 'arcs' in NbSe2
• Tracking Cooper Pairs in a Cuprate Superconductor by Ultrafast Angle-Resolved Photoemission
• From high temperature supercondutivity to quantum spin liquid: progress in strong correlation physics
• Strongly Correlated Superconductivity: a plaquette Dynamical mean field theory study
• Evolution of the electronic excitation spectrum with strongly diminishing hole-density in superconducting Bi_{2}Sr_{2}CaCu_{2}O_{8+δ}
• Modeling the Fermi arc in underdoped cuprates
• Pseudogap from ARPES experiment: three gaps in cuprates and topological superconductivity
• Antiferromagnetically Driven Electronic Correlation in Iron Pnictides and Cuprates
• Angle-resolved photoemission spectroscopy
• Extending Universal Nodal Excitations Optimizes Superconductivity in Bi2Sr2CaCu2O8+d
• Unidirectional d-wave superconducting domains in the two-dimensional t-J model
• Coexistence of competing orders with two energy gaps in real and momentum space in high-Tc superconductor Bi2Sr2-xLaxCuO6+delta
• Pseudogap, Superconducting Gap, and Fermi Arc in High-Tc Cuprates Revealed by Angle-Resolved Photoemission Spectroscopy
• Does Simple Two-Dimensional Hubbard Model Account for High-Tc Superconductivity in Copper Oxides?
• Crossover between BCS Superconductor and Doped Mott Insulator of d-wave Pairing State in Two-Dimensional Hubbard Model
• Decrease of upper critical field with underdoping in cuprate superconductors
• Imaging nanoscale Fermi surface variations in an inhomogeneous superconductor
• The coherent {\it d}-wave superconducting gap in underdoped La${}_{2-x}$Sr${}_x$CuO${}_4$ as studied by angle-resolved photoemission
• Direct observation of the coexistence of pseudogap and superconducting quasi-particles in Bi2212 by time-resolved optical spectroscopy
• Cuprate superconductors as viewed through a striped lens
• Nodal/Antinodal Dichotomy and the Two Gaps of a Superconducting Doped Mott Insulator
• Energy Gaps and Kohn Anomalies in Elemental Superconductors
• Distinct doping dependences of the pseudogap and superconducting gap La${}_{2-x}$Sr${}_x$CuO${}_4$ cuprate superconductors
• Intermediate Coupling Model of the Cuprates
• Phenomenological description of the two energy scales in underdoped superconducting cuprates
• Electronic structure near the 1/8-anomaly in La-based cuprates
• Unified electronic phase diagram for hole-doped high-Tc cuprates
• A momentum-dependent perspective on quasiparticle interference in Bi_{2}Sr_{2}CaCu_{2}O_{8+δ}
• Emergence of Cooper pairs, d-wave duality and the phase diagram of cuprate superconductors
• Temperature dependence of the bulk energy gap in underdoped Bi-2212: Evidence for the mean-field superconducting transition
• The doping-driven evolution of the superconducting state of a doped Mott insulator: a key for the high temperature superconductivity
• Monotonic d-wave Superconducting Gap in Optimally-Doped Bi${}_2$Sr${}_{1.6}$La${}_{0.4}$CuO${}_6$ Superconductor by Laser-Based Angle-Resolved Photoemission Spectroscopy
• Evolution of the gaps through the cuprate phase-diagram
• Time- and Momentum-resolved Gap Dynamics in Bi2Sr2CaCu2O8+delta
• A competing order scenario of two-gap behavior in hole doped cuprates
• Stability of RVB hole stripes in high-temperature superconductors
• Pseudogap in underdoped cuprates and spin-density-wave fluctuations
• Pre-pairing and the "Filling" Gap in the Cuprates From the Tomographic Density of States
• ARPES experiment in fermiology of quasi-2D metals (Review Article)
• Non-monotonic pseudo-gap in high-Tc cuprates
• Paired electron pockets in the hole-doped cuprates
• The nodal gap component as a good candidate for the superconducting order parameter in cuprates
• Scaling analysis of normal state properties of high-temperature superconductors
• An ARPES view on the high-Tc problem: phonons vs spin-fluctuations
• Universal Behavior and the Two-component Character of Magnetically Underdoped Cuprate Superconductors
• The superconducting gap in the Hubbard model and the two gap energy scales in high-Tc cuprates
• Breakdown of universal transport in correlated d-wave superconductors
• Evolution of the dynamical pairing across the phase diagram of a strongly correlated high-temperature superconductor
• Fermiology of Cuprates from First Principles: From Small Pockets to the Luttinger Fermi surface
• Superconducting electronic state in optimally doped YBa2Cu3O7-d observed with laser-excited angle-resolved photoemission spectroscopy
• The pseudogap ground state in high temperature superconductors
• Evidence for competition between the superconducting and the pseudogap state in (BiPb)_2(SrLa)_2CuO_{6+δ} from muon-spin rotation experiments
• Spectroscopic evidence for preformed Cooper pairs in the pseudogap phase of cuprates
• Theory of reduced singlet pairing without the underlying state of charge stripes in the high-temperature superconductor YBa_2Cu_3O_6.45
• Quasiparticle bands in cuprates by quantum chemical methods: towards an ab initio description of strong electron correlations
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• Oxygen-isotope effect on the superconducting gap in the cuprate superconductor Y_{1-x}Pr_xBa_2Cu_3O_{7-δ}
• Reaffirming the $d_{x^2-y^2}$ superconducting gap using the auto-correlation angle-resolved photoemission spectroscopy of Bi${}_{1.5}$Pb${}_{0.55}$Sr${}_{1.6}$La${}_{0.4}$CuO${}_{6+\delta }$
• Pseudogap transition within the superconducting phase in the three-band Hubbard model
• Superconductivity studied by solving ab initio low-energy effective Hamiltonians for carrier doped CaCuO${}_2$, Bi${}_2$Sr${}_2$CuO${}_6$, Bi${}_2$Sr${}_2$CaCu${}_2$O${}_8$, and HgBa${}_2$CuO${}_4$
• Breakdown of the Fermi-liquid regime in the 2D Hubbard model from a two-loop field-theoretical renormalization group approach
• On the checkerboard pattern and the autocorrelation of photoemission data in high temperature superconductors
• Doping Dependencies of Onset Temperatures for the Pseudogap and Superconductive Fluctuation in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$, Studied from both In-Plane and Out-of-Plane Magnetoresistance Measurements
• Thermodynamic properties of Bi2Sr2CaCu2O8 calculated from the electronic dispersion
• Coherency of the superconducting state: the muon spin rotation and ARPES studies of (BiPb)_2(SrLa)_2CuO_{6+δ}
• Robustness of the nodal d-wave spectrum to strongly fluctuating competing order
• Doping-dependence of nodal quasiparticle properties in high-$T_{\mathrm{c}}$ cuprates studied by laser-excited angle-resolved photoemission spectroscopy
• Momentum-resolved measurement of electronic nematic susceptibility in the FeSe${}_{0.9}$S${}_{0.1}$ superconductor
• Fermi momentum resolved charge order for spin disordered stripes
• Unscaling Superconducting Parameters with $T_c$ for Bi-2212 and Bi-2223: A Magnetotransport Study in the Superconductive Fluctuation Regime
• Pseudogap Behavior Revealed in Interlayer Tunneling in Overdoped Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+x}$
• Angle-Resolved Photoemission from Cuprates with Static Stripes
• Electronic Evolution from the Parent Mott Insulator to a Superconductor in Lightly Hole-Doped Bi2Sr2CaCu2O8+delta
• Incoherent superconductivity well above $T_c$ in high-$T_c$ cuprates - harmonizing the spectroscopic and thermodynamic data
• Strongly Correlated Superconductivity rising from a Pseudo-gap Metal
• ARPES, Neutrons, and the High-$T_c$ Mechanism
• The influence of out-of-plane disorder on the formation of pseudogap and Fermi arc in Bi2Sr2-xRxCuOy (R=La and Eu)
• Selective Hybridization between Main Band and Superstructure Band in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ Superconductor
• Evolution of the electronic structure from the insulator to the superconductor in Bi2Sr2-xLax(Ca,Y)Cu2O8+d
• Homogeneous superconducting gap in DBCO synthesized by oxide molecular beam epitaxy
• Energy Scales in the Raman spectrum of electrons and hole doped cuprates within competing scenarios
• Enhanced superconducting gap in the outer CuO${}_2$ plane of the trilayer cuprate (Hg,Re)Ba${}_2$Ca${}_2$Cu${}_3$O${}_{8+\delta }$
• Lattice Quantum Geometry Controlling 118 K Multigap Superconductivity in Heavily Overdoped CuBa2Ca3Cu4O10+d
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• Origin of positive out-of-plane magnetoconductivity in overdoped Bi${}_{1.6}$Pb${}_{0.4}$Sr${}_2$CaCu${}_{1.96}$Fe${}_{0.04}$O${}_{8+\delta }$
• Abrupt Onset of Second Energy Gap at Superconducting Transition of Underdoped Bi2212
• Evolution with hole doping of the electronic excitation spectrum in the cuprate superconductors
• Valence bond glass -- A unified theory of electronic disorder and pseudogap phenomena in high temperature superconductors
• Correlation between $T_{\mathrm{c}}$ and the Pseudogap Observed in the Optical Spectra of High $T_{\mathrm{c}}$ Superconducting Cuprates
• Momentum dependence of the energy gap in the superconducting state of optimally doped Bi2(Sr,R)2CuOy (R=La and Eu)
• Quantitative Comparison between Electronic Raman Scattering and Angle-Resolved Photoemission Spectra in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ Superconductors: Doping Dependence of Nodal and Antinodal Superconducting Gaps
• Energy gaps in high-$T_c$ superconductors: BCS after all?
• Unusual electronic structure in underdoped cuprate superconductors
• The Low-Temperature Phenomenology of Gap Inhomogeneity in the Cuprate Superconductors: High-Energy Granularity, Low-Energy Homogeneity, and Spectral Kinks
• Superconductivity of Bad Fermions: Origin of Two Gaps in HTSC Cuprates
• Shallow core levels, or how to determine the doping and $T_c$ of Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ and Bi${}_2$Sr${}_2$CuO${}_{6+\delta }$ without cooling
• Determination of Fermi surface by charge density correlations
• Possible Spatial Correlation of Superconducting and Pseudogap Dynamics in a Bi-based Cuprate
• Effects of the pseudo-gap on the field-induced kinetic energy density of Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ single crystals
• BCS-BEC crossover driven by small Fermi pockets of a high-Tc cuprate superconductor
• Proximity-induced hidden order transition in a correlated heterostructure Sr${}_2$VO${}_3$FeAs