Atomic Scale Imaging and Spectroscopy of a CuO_2 Plane at the Surface of Bi_2Sr_2CaCu_2O_{8+delta}

Abstract

We have used a scanning tunneling microscope to demonstrate that a single CuO_2 plane can form a stable and atomically ordered layer at the surface of Bi_2Sr_2CaCu_2O_{8+delta}. In contrast to previous studies on high-T_c surfaces, the CuO_2-terminated surface exhibits a strongly suppressed tunneling conductance at low voltages. We consider a number of different explanations for this phenomena and propose that it may be caused by how the orbital symmetry of the CuO_2 plane's electronic states affects the tunneling process.

to be published in PRL vol. 89, issue 8

References in corpus (1)

• Impurity states and interlayer tunneling in high temperature superconductors

Cited by in corpus (20)

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• Temperature dependence of the bulk energy gap in underdoped Bi-2212: Evidence for the mean-field superconducting transition
• Mapping the Electronic Structure of Each Ingredient Oxide Layer of High-$T_{\text{c}}$ Cuprate Superconductor Bi2Sr2CaCu2O8+δ
• Hypothesis of two-dimensional stripe arrangement and its implications for the superconductivity in high-Tc cuprates
• Direct observation of nodeless superconductivity and phonon modes in electron-doped copper oxide Sr${}_{1-x}$Nd${}_x$CuO${}_2$
• 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
• Tracing the electronic pairing glue in unconventional superconductors via inelastic Scanning Tunneling Spectroscopy
• Atomic Visualization of Copper Oxide Structure in Infinite-Layer Cuprate SrCuO2
• Scanning tunneling spectroscopy of a-axis YBa_2Cu_3O_7-δfilms:k-selectivity and the shape of the superconductor
• Orbital Symmetry and Orbital Excitations in High-$T_c$ Superconductors
• Possible Nodeless Superconducting Gaps in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ and YBa${}_2$Cu${}_3$O${}_{7-x}$ Revealed by Cross-Sectional Scanning Tunneling Spectroscopy
• Molecular beam epitaxy growth and surface structure of Sr1-xNdxCuO2 cuprate films
• Electronic inhomogeneity and band structure on superstructural CuO2 planes of infinite-layer Sr0.94La0.06CuO2+y films
• Coexistence of $s$- and $d$-wave gaps due to pair-hopping and exchange interactions
• Principles of the Field Theory of High Temperature Superconductivity in Underdoped Copper-Oxides
• Topological Phase Transition in Superconductors with Mirror Symmetry
• Alternate cleavage structure and electronic inhomogeneity in Ca-doped YBa${}_2$Cu${}_3$O${}_{7-\delta }$
• The Itinerancy and Interactions of the Linear Strings of Holes in Copper Oxide Superconductors