Modeling scanning tunneling spectra of $B{i}_{2}S{r}_{2}CaC{u}_2{O}_{8+\delta }$

Abstract

Recent angle-resolved photoemission and neutron scattering data have provided new ingredients for the interpretation of scanning tunneling spectra on Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$. We analyze the low-temperature tunneling spectra, from oxygen overdoped to underdoped samples, including details about the bilayer splitting and the neutron resonance peak. Two van Hove singularities are identified: the first is integrated in the coherence peaks, the second is heavily broadened at higher binding energy. The shape of the tunneling spectra suggests a strong coupling of the quasiparticles with a collective mode, and a comparison with photoemission shows that the scattering rate in tunneling is an order of magnitude smaller than in ARPES. Finally, the theoretical spectra calculated with an isotropic tunneling matrix element are in better agreement with the experimental data than those obtained with anisotropic matrix elements.

arXiv comment7 pages, with 4 figures

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• First direct observation of the Van Hove singularity in the tunneling spectra of cuprates
• Persistence of Strong Electron Coupling to a Narrow Boson Spectrum in Overdoped BiSrCaCuO (Bi2212) Tunneling Data
• Origin of electron-hole asymmetry in the scanning tunneling spectrum of $B{i}_{2}S{r}_{2}CaC{u}_2{O}_{8+\delta }$
• Preeminent role of the Van Hove singularity in the strong-coupling analysis of scanning tunneling spectroscopy for two-dimensional cuprates
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• Bridging k- and q- Space in the Cuprates: Comparing ARPES and STM Results
• Tunneling conductance and local density of states in tight-binding junctions
• ARPES on HTSC: simplicity vs. complexity
• Mapping the Electronic Structure of Each Ingredient Oxide Layer of High-$T_{\text{c}}$ Cuprate Superconductor Bi2Sr2CaCu2O8+δ
• Spectral decomposition and matrix element effects in scanning tunneling spectroscopy of Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Evidence of nodal superconductivity in monolayer 1H-TaS${}_2$ with hidden order fluctuations
• First Scanning Tunnelling Spectroscopy on Bi2Sr2Ca2Cu3O10 (Bi2223) single crystals
• Strong-coupling analysis of scanning tunneling spectra in Bi${}_2$Sr${}_2$Ca${}_2$Cu${}_3$O${}_{10+\delta }$
• Quasiparticle density of states in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ single crystals probed using tunneling spectroscopy at ultra-low temperatures in high magnetic fields
• Quasiparticle spectrum of the cuprate BiSrCaCuO: Possible connection to the phase diagram
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• Tunneling Spectroscopy on c-axis Y{1-x}Ca{x}Ba2Cu3O{7-delta} Thin Films
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• Theory of (001) surface and bulk states in Y${}_{1-y}$Ca${}_y$Ba${}_2$Cu${}_3$O${}_{7-\delta }$}
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• Density Waves Cause Sub-Gap Structures but no Pseudogap in Superconducting Cuprates
• Controversy over large proximity induced s wave like pairing from a d wave superconductor
• Pseudogap Behavior Revealed in Interlayer Tunneling in Overdoped Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+x}$
• Pair-pair interactions as a mechanism for high-T${}_c$ superconductivity
• Strong-coupling Effects in cuprate High-$T_c$ Superconductors by magnetooptical studies
• Structure of the core of magnetic vortices in d-wave superconductors with a subdominant triplet pairing mechanism
• Tunneling spectra of strongly coupled superconductors: Role of dimensionality
• From tunneling to photoemission: correlating two spaces
• Charge and current orders in the spin-fermion model with overlapping hot spots
• Observation of two Andreev-like energy scales in $L{a}_{2-x}S{r}_{x}Cu{O}_4$ superconductor/normal-metal/superconductor junctions
• Stripe-Like Inhomogeneities, Spectroscopies, Pairing, and Coherence in the High-Tc Cuprates
• Atomic-scale analysis of disorder by similarity learning from tunneling spectroscopy
• Smearing origin of zero-bias conductance peak in Ag-SiO-Bi-2212 planar tunnel junctions: influence of diffusive normal metal verified with the circuit theory
• Temperature Effect and Fermi Surface Investigation in the Scanning Tunneling Microscopy of Bi${}_2$Sr${}_2$CaCu${}_2$O${}_8$