Energy gap evolution in the tunneling spectra of Bi2Sr2CaCu2O8+d

Abstract

On the basis of the tunneling spectra of Bi2212, we report that there exist two kinds of pseudogaps; one with a characteristic energy comparable to the superconducting (SC) gap and another one that is 3 to 4 times larger. The smaller energy-scale pseudogap (SPG) develops progressively below temperature T*, which nearly scales with the SC gap amplitude D0, in addition to the larger energy-scale pseudogap (LPG). The SPG smoothly develops into the SC-state gap with no tendency to close at Tc.

7 pages, 6 figures, reference for figures: http://mary.sci.hokudai.ac.jp/LABS/kouatsu/egefigure/index.html

References in corpus (3)

• Evidence for ubiquitous strong electron-phonon coupling in high-temperature superconductors
• Algebraic Fermi liquid from phase fluctuations: "topological" fermions, vortex "berryons" and QED3 theory of cuprate superconductors
• Correlation of Tunneling Spectra in Bi2Sr2CaCu2O(8+delta) with the Resonance Spin Excitation

Cited by in corpus (24)

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• Theory of Superconductivity in Strongly Correlated Electron Systems
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• Direct observation of the coexistence of pseudogap and superconducting quasi-particles in Bi2212 by time-resolved optical spectroscopy
• Electronic Specific Heat of La_{2-x}Sr_{x}CuO_{4}: Pseudogap Formation and Reduction of the Superconducting Condensation Energy
• Unified electronic phase diagram for hole-doped high-Tc cuprates
• Nematic Fluctuations in the Cuprate Superconductor Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Evidence for Intra-Unit-Cell magnetic order in Bi2Sr2CaCu2O8+d
• Counterintuitive Consequence of Heating in Strongly-Driven Intrinsic-Junctions of Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ Mesas
• Dynamics of broken symmetry nodal and anti-nodal excitations in Bi_{2} Sr_{2} CaCu_{2} O_{8+δ} probed by polarized femtosecond spectroscopy
• Loop currents in quantum matter
• Signatures of superconductivity and pseudogap formation in non-equilibrium nodal quasiparticles revealed by ultrafast angle-resolved photoemission
• Quasiparticle dynamics in overdoped Bi${}_{1.4}$Pb${}_{0.7}$Sr${}_{1.9}$CaCu${}_2$O${}_{8+\delta }$: Coexistence of superconducting gap and pseudogap below $T_c$
• Pseudogap and Superconducting Fluctuation in High-Tc Cuprates: Theory beyond 1-loop Approximation
• Universal relationship between the energy scales of the pseudogap phase, the superconducting state and the charge density wave order in copper oxide superconductors
• Theory of Kondo lattices and its application to high-temperature superconductivity and pseudo-gaps in cuprate oxides
• Anisotropic evolution of energy gap in Bi2212 superconductor
• Rebuttal to "Comment by V.M. Krasnov on 'Counterintuitive consequence of heating in strongly-driven intrinsic junctions of Bi2Sr2CaCu2O8+d Mesas' "
• Probing the Phase Diagram of Bi2Sr2CaCu2O8+d with Tunneling Spectroscopy
• Strong-coupling Superconductivity in the Cuprate Oxide
• Doping-induced evolution of the intrinsic hump and dip energies dependent on the sample fabrication conditions in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Condensation mechanism of high-$T_c$ cuprates: the key role of pairon excitations