Disparity of superconducting and pseudogap scales in low-Tc Bi-2201 cuprates

Abstract

We experimentally study transport and intrinsic tunneling characteristics of a single-layer cuprate Bi(2+x)Sr(2-y)CuO(6+delta) with a low superconducting critical temperature Tc < 4 K. It is observed that the superconducting energy, critical field and fluctuation temperature range are scaling down with Tc, while the corresponding pseudogap characteristics have the same order of magnitude as for high-Tc cuprates with 20 to 30 times higher Tc. The observed disparity of the superconducting and pseudogap scales clearly reveals their different origins.

arXiv comment5 pages

References in corpus (34)

• The Nernst effect in high-$T_c$ superconductors
• The doping dependence of T* - what is the real high-Tc phase diagram?
• Two Gaps Make a High Temperature Superconductor?
• Charge density wave origin of cuprate checkerboard visualized by scanning tunneling microscopy
• 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
• Imaging the Two Gaps of the High-TC Superconductor Pb-Bi2Sr2CuO6+x
• Disentangling Cooper-pair formation above Tc from the pseudogap state in the cuprates
• Temporal correlations of superconductivity above the transition temperature in La${}_{2-x}$Sr${}_x$CuO${}_4$ probed by terahertz spectroscopy
• Universal relation between magnetic resonance and superconducting gap in unconventional superconductors
• A Systematic Study of Electron-Phonon Coupling to Oxygen Modes Across the Cuprates
• An explanation for a universality of transition temperatures in families of copper oxide superconductors
• Evidence of precursor superconductivity as high as 180 K from infrared spectroscopy
• Origin of the peak-dip-hump structure in the photoemission spectra of Bi2212
• High Field Studies of Superconducting Fluctuations in High-T_c Cuprates: Evidence for a Small Gap distinct from the Large Pseudogap
• Decrease of upper critical field with underdoping in cuprate superconductors
• Evolution of the resistivity anisotropy in Bi_{2}Sr_{2-x}La_{x}CuO_{6+δ} single crystals for a wide range of hole doping
• Temperature range of superconducting fluctuations above T_c in YBa_2Cu_3O_{7-δ} single crystals
• Quantum Phase Transition in the Normal State of High-Tc Cuprates at Optimum Doping
• Carrier-Concentration Dependence of the Pseudogap Ground State of Superconducting Bi2Sr2-xLaxCuO6+delta Revealed by 63,65Cu-Nuclear Magnetic Resonance in Very High Magnetic Fields
• High-Field Quasiparticle Tunneling in Bi_2Sr_2CaCu_2O_8+delta: Negative Magnetoresistance in the Superconducting State
• In-situ measurement of self-heating in intrinsic tunnelling spectroscopy
• 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
• Temperature dependence of the bulk energy gap in underdoped Bi-2212: Evidence for the mean-field superconducting transition
• Superconducting Fluctuations, Pseudogap and Phase Diagram in Cuprates
• Preeminent role of the Van Hove singularity in the strong-coupling analysis of scanning tunneling spectroscopy for two-dimensional cuprates
• Two mechanisms of pseudogap formation in Bi-2201: Evidence from the c-axis magnetoresistance
• An energy scale directly related to superconductivity in the high-$T_c$ cuprate superconductors: Universality from the Fermi arc picture
• Three energy scales characterizing the competing pseudogap state, the incoherent, and the coherent superconducting state in high-Tc cuprates
• Superconductivity in Multilayer Perovskite: Weak Coupling Analysis
• 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
• Origins of large critical temperature variations in single layer cuprates
• Multi-Junction Switching in Bi${}_2$Sr${}_{1.6}$La${}_{0.4}$CuO${}_{6+\delta }$ Intrinsic Josephson Junctions

Cited by in corpus (5)

• Low anisotropy of the upper critical field in a strongly anisotropic layered cuprate: Evidence for paramagnetically limited superconductivity
• Nonanalyticities in a Strongly Correlated Fermi Liquid: Corrections to Scaling at the Fermi-Liquid Fixed Point
• Superconducting condensate residing on small Fermi pockets in underdoped cuprates
• Observation of a subharmonic gap singularity in interlayer tunneling characteristics of Bi2Sr2CaCu2O8+d
• Cu NMR study of a Pb-doped Bi:2201 single crystal