The coherent {\it d}-wave superconducting gap in underdoped La${}_{2-x}$Sr${}_x$CuO${}_4$ as studied by angle-resolved photoemission

Abstract

We present angle-resolved photoemission spectroscopy (ARPES) data on moderately underdoped La${}_{1.855}$Sr${}_{0.145}$CuO${}_4$ at temperatures below and above the superconducting transition temperature. Unlike previous studies of this material, we observe sharp spectral peaks along the entire underlying Fermi surface in the superconducting state. These peaks trace out an energy gap that follows a simple {\it d}-wave form, with a maximum superconducting gap of 14 meV. Our results are consistent with a single gap picture for the cuprates. Furthermore our data on the even more underdoped sample La${}_{1.895}$Sr${}_{0.105}$CuO${}_4$ also show sharp spectral peaks, even at the antinode, with a maximum superconducting gap of 26 meV.

arXiv commentAccepted by Phys. Rev. Lett

References in corpus (12)

• Angle-resolved photoemission spectroscopy of the cuprate superconductors
• Destruction of the Fermi Surface in Underdoped High Tc Superconductors
• The pseudogap: friend or foe of high Tc?
• Distinct Fermi-Momentum Dependent Energy Gaps in Deeply Underdoped Bi2212
• Phenomenology of Photoemission Lineshapes of High Tc Superconductors
• Superconducting Gap Anisotropy and Quasiparticle Interactions: a Doping Dependent ARPES Study
• Evidence for two energy scales in the superconducting state of optimally doped (Bi,Pb)2(Sr,La)2CuO6+d
• Protected nodes and the collapse of the Fermi arcs in high Tc cuprates
• Low-Energy Electronic Structure of the High-Tc Cuprates La2-xSrxCuO4 Studied by Angle-resolved Photoemission Spectroscopy
• Distinct doping dependences of the pseudogap and superconducting gap La${}_{2-x}$Sr${}_x$CuO${}_4$ cuprate superconductors
• Bosonic spectral density of epitaxial thin-film La1.83Sr0.17CuO4 superconductors from infrared conductivity measurements
• Magnetic-field-induced spin excitations and renormalized spin gap of the underdoped superconductor La${}_{1.895}$Sr${}_{0.105}$CuO${}_4$

Cited by in corpus (58)

• Energy gaps in high-transition temperature cuprate superconductors
• Striped superconductors: How the cuprates intertwine spin, charge and superconducting orders
• Direct evidence for a competition between the pseudogap and high temperature superconductivity in the cuprates
• Iron based high transition temperature superconductors
• Tuning competing orders in La2-xSrxCuO4 cuprate superconductors by the application of an external magnetic field
• Coexistence of competing orders with two energy gaps in real and momentum space in high-Tc superconductor Bi2Sr2-xLaxCuO6+delta
• Observation of a d-wave nodal liquid in highly underdoped Bi_2Sr_2CaCu_2O_{8+δ}
• The emergence of coherent magnetic excitations in the pseudogap phase of La2-xSrxCuO4
• Electron scattering, charge order, and pseudogap physics in La${}_{1.6-x}$Nd${}_{0.4}$Sr${}_x$CuO${}_4$: An angle resolved photoemission spectroscopy study
• Evolution from a nodeless gap to d(x2-y2) form in underdoped La(2-x)SrxCuO4
• Intermediate Coupling Model of the Cuprates
• Evolution of a pairing-induced pseudogap from the superconducting gap of (Bi,Pb)2Sr2CuO6
• The doping-driven evolution of the superconducting state of a doped Mott insulator: a key for the high temperature superconductivity
• Anisotropic quasiparticle scattering rates in slightly underdoped to optimally doped high-temperature \LSCO\ superconductors
• 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
• Superconducting coherence peak in the electronic excitations of a single layer cuprate superconductor $B{i}_{2}S{r}_{1.6}L{a}_{0.4}Cu{O}_{6+\delta }$
• Pseudogap in underdoped cuprates and spin-density-wave fluctuations
• New insights into the phase diagram of the copper oxide superconductors from electronic Raman scattering
• Strongly correlated doped hole carriers in the superconducting nickelates: Their location, local many-body state, and low-energy effective Hamiltonian
• Experimental Evidence that Zn Impurities Pin Pair-Density-Wave Order in La${}_{2-x}$Ba${}_x$CuO${}_4$
• Spectroscopic evidence for preformed Cooper pairs in the pseudogap phase of cuprates
• Evidence for competition between the superconducting and the pseudogap state in (BiPb)_2(SrLa)_2CuO_{6+δ} from muon-spin rotation experiments
• Broken relationship between superconducting pairing interaction and electronic dispersion kinks in LSCO
• Three energy scales characterizing the competing pseudogap state, the incoherent, and the coherent superconducting state in high-Tc cuprates
• Electronic Raman Scattering in copper oxide Superconductors: Understanding the Phase Diagram
• Short-ranged and short-lived charge-density-wave order and pseudogap features in underdoped cuprates superconductors
• Anisotropy of the gap parameter in the hole-doped cuprates
• Pseudogap-induced coexistence of Fermi arcs and Fermi pockets in cuprate superconductors
• Doping dependence of charge order in electron-doped cuprate superconductors
• Phase Competition and Anomalous Thermal Evolution in High-Temperature Superconductors
• Autocorrelation of quasiparticle spectral intensities and its connection with quasiparticle scattering interference in cuprate superconductors
• Two pseudogaps with different energy scales at the antinode of the high-temperature Bi${}_2$Sr${}_2$CuO${}_6$ superconductor using angle-resolved photoemission spectroscopy
• Superconductivity distorted by the coexisting pseudogap in the antinodal region of Bi${}_{1.5}$Pb${}_{0.55}$Sr${}_{1.6}$La${}_{0.4}$CuO${}_{6+\delta }$: A photon-energy-dependent angle-resolved photoemission study
• Superconducting pairing and the pseudogap in nematic striped La2-xSrxCuO4
• Interplay between charge order and superconductivity in cuprate superconductors
• Doping and temperature dependence of the pseudogap and Fermi arcs in cuprates from $d$-CDW short-range fluctuations in the context of the t-J model
• Determination of the superconducting gap in near optimally doped Bi_2Sr_{2-x}La_xCuO_{6+δ} (x ~ 0.4) from low-temperature specific heat
• Out-of-plane impurities induced the deviation from the monotonic d-wave superconducting gap in cuprate superconductors
• Low-temperature T-linear resistivity in the strange metal phase of overdoped cuprate superconductors due to umklapp scattering from a spin excitation
• Influence of impurities on electronic structure in cuprate superconductors
• Correlation between charge order and second-neighbor hopping in cuprate superconductors
• Observation of two Andreev-like energy scales in $L{a}_{2-x}S{r}_{x}Cu{O}_4$ superconductor/normal-metal/superconductor junctions
• Study of pseudogap and superconducting quasiparticle dynamics in $\mathrm{B}{\mathrm{i}}_2\mathrm{S}{\mathrm{r}}_2\mathrm{CaC}{\mathrm{u}}_2{\mathrm{O}}_{8+\delta }$ by time-resolved optical reflectivity
• Pseudogap Suppression by Competition with Superconductivity in La-Based Cuprates
• Low-temperature T${}^2$ resistivity in the underdoped pseudogap phase versus T-linear resistivity in the overdoped strange-metal phase of cuprate superconductors
• Doping and momentum dependence of coupling strength in cuprate superconductors
• Quantum critical point in high-temperature superconductors
• Quasiparticle scattering interference in cuprate superconductors
• Ni-impurity effects on the superconducting gap of La${}_{2-x}$Sr${}_x$CuO${}_4$ studied from the magnetic field and temperature dependence of the electronic specific heat
• Sketching the Theory of Copper Oxide High Temperature Superconductivity
• Unconventional particle-hole mixing in the systems with strong superconducting fluctuations
• The mechanism of anisotropic exchange interaction in superconducting iron arsenides
• Self-energy effects in cuprates and the dome-shaped behavior of the superconducting critical temperature
• Unusual electronic structure in underdoped cuprate superconductors
• Doping dependence and multichannel mediators of superconductivity: Calculations for a cuprate model
• Microwave conductivity due to impurity scattering in cuprate superconductors
• Impurity-Scattering Assisted Umklapp Scattering as the Origin of Low-Temperature Resistivity in the Normal-State of Cuprate Superconductors
• On d+id density wave and superconducting orderings in hole-doped cuprates