Discrimination between the superconducting gap and the pseudo-gap in Bi2212 from intrinsic tunneling spectroscopy in magnetic field

Abstract

Intrinsic tunneling spectroscopy in high magnetic field ($H$) is used for a direct test of superconducting features in a quasiparticle density of states of high-$T_c$ superconductors. We were able to distinguish with a great clarity two co-existing gaps: (i) the superconducting gap, which closes as $H\to H_{c2}(T)$ and $T\to T_c(H)$, and (ii) the $c$-axis pseudo-gap, which does not change neither with $H$, nor $T$. Strikingly different magnetic field dependencies, together with previously observed different temperature dependencies of the two gaps ~\cite{Krasnov}, speak against the superconducting origin of the pseudo-gap.

4 pages, 4 eps figures

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Cited by in corpus (68)

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• Origin of the peak-dip-hump structure in the photoemission spectra of Bi2212
• The Doping Phase Diagram of Y1-xcaxba2(Cu1-yzny)3O7-d from Transport Measurements: Tracking the Pseudogap Below Tc (y = 0)
• Collapse of thermal activation in moderately damped Josephson junctions
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• Anomalous magnetoresistance in the spinel superconductor LiTi2O4
• Intrinsic tunneling spectra of Bi_2(Sr_{2-x}La_x)CuO_6
• Interlayer tunneling spectroscopy of Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$: a look from inside on the doping phase diagram of high $T_c$ superconductors
• Anticorrelation between temperature and fluctuations in moderately damped Josephson junctions
• Temperature dependence of the bulk energy gap in underdoped Bi-2212: Evidence for the mean-field superconducting transition
• Superfluid density of high-Tc cuprate systems: implication on condensation mechanisms, heterogeneity and phase diagram
• Isotope Effect in the Superfluid Density of HTS Cuprates: Stripes, Pseudogap and Impurities
• Counterintuitive Consequence of Heating in Strongly-Driven Intrinsic-Junctions of Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ Mesas
• Gaussian Tunneling Model of c-Axis Twist Josephson Junctions
• The Effects of Phase Separation in the Cuprate Superconductors
• Magnetic Field Effect on the Pseudogap Temperature within Precursor Superconductivity
• Quantum cascade phenomenon in natural atomic superlattices formed in Bi2Sr2CaCu2O8 single crystals
• Probing the intrinsic Josephson potential in Bi-2212 by thermal activation
• Critical field in a model with local pairs
• Stabilization of in-phase fluxon state by geometrical confinement in small Bi-2212 mesa structures
• Developments in the negative-U modelling of the cuprate HTSC systems
• Josephson Junctions and AdS/CFT Networks
• Vortex structure in d-density wave scenario of pseudogap
• "Pair" Fermi contour and repulsion-induced superconductivity in cuprates
• Properties of small HTSC mesa structures: common problems of interlayer tunneling
• Magnetic Field Effects in the Pseudogap Phase: A Competing Energy Gap Scenario for Precursor Superconductivity
• Theory of the Fermi Arcs, the Pseudogap, $T_c$ and the Anisotropy in k-space of Cuprate Superconductors
• Observation of polaritons in Bi2Sr2CaCu2O8+x single crystals
• Nernst effect and Critical Field in Cuprate Superconductors
• Phase Separation and the Phase Diagram in Cuprates Superconductors
• Comparative analysis of tunneling magnetoresistance in low-$T_c$ Nb/AlAlOx/Nb and high-$T_c$ Bi${}_{2-y}$Pb${}_y$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ intrinsic Josephson junctions
• Intrinsic Tunneling in Cuprates and Manganites
• C-axis Response of a High-T_{c} Superconductor with D-Density Wave Order
• Stacked Josephson junction SQUID
• Zeeman and Orbital Limiting Fields: Separated Spin and Charge Degrees of Freedom in Cuprate 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
• The Disordered Induced Interaction and the Phase Diagram of Cuprates
• Evidence for a Quasi-1D Topological-Excitation Liquid in Bi2212 by Tunneling Spectroscopy
• Quasi-One-Dimensional Topological-Excitation Liquid in Bi2212 from Tunneling Spectroscopy
• Upper critical field for underdoped high-T_c superconductors. Pseudogap and stripe--phase
• Superconducting quantum interference phenomenon in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ single crystals
• Electronic Phase Separation Transition as the Origin of the Superconductivity and the Pseudogap Phase of Cuprates
• C-Axis Tunneling Spectra in High-T${}_c$ Superconductors in the Presence of a d Charge-Density Wave
• Pairbreaking Without Magnetic Impurities in Disordered Superconductors
• Non-conservation of Density of States in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_y$: Coexistence of Pseudogap and Superconducting gap
• Comment on Counterintuitive consequence of heating in strongly driven intrinsic junctions of Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ mesas
• Observation of McMillan-Rowell like oscillations in underdoped YBCO junctions oriented along the node of the d-wave order parameter
• Tunnel and thermal c-axis transport in BSCCO in the normal and pseudogap state
• Pseudogap and Conduction Dimensionalities in High-T_c Superconductors
• Comment: Essence of intrinsic tunneling: Distinguishing intrinsic features from artifacts [Phys.Rev.B 72 (2005) 094503]
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• Thermodynamic and electromagnetic properties of the eta-pairing superconductivity in the Penson-Kolb model
• Relationships between the superconducting gap, pseudogap and transition temperature in High-T_c superconductors
• C-axis Optical Sum Rule in Josephson Coupled Vortex State
• Origin of positive out-of-plane magnetoconductivity in overdoped Bi${}_{1.6}$Pb${}_{0.4}$Sr${}_2$CaCu${}_{1.96}$Fe${}_{0.04}$O${}_{8+\delta }$
• Origin of dips in tunneling dI/dV characteristics of cuprates
• Intrinsic tunneling spectroscopy: A look from the inside at HTSC
• Evolution with hole doping of the electronic excitation spectrum in the cuprate superconductors
• In-plane Tunneling Spectrum into a [110]-Oriented High-$T_c$ Superconductor in the Pseudogap Regime
• Hall-Lorenz ratio of YBa2Cu3O7 using Ionization energy based Fermi-Dirac statistics and charge-spin separation
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• Interlayer tunneling spectroscopy of graphite at high magnetic field oriented parallel to the layers
• Phase fluctuations of s-wave superconductors on a lattice
• Comment on Visualization of the interplay between high-temperature superconductivity, the pseudogap and impurity resonances
• Comment on Evolution of the electronic excitation spectrum with strongly diminishing hole density in superconducting Bi-2212 (J. W. Alldredge et al., Nature Phys. 4, 319 (2008))