Imaging the effects of individual zinc impurity atoms on superconductivity in Bi2Sr2CaCu2O8+δ

  title={Imaging the effects of individual zinc impurity atoms on superconductivity in Bi2Sr2CaCu2O8+$\delta$},
  author={Shuheng H. Pan and Eric W. Hudson and Kristine Lang and Hiroshi Eisaki and Shin-ichi Uchida and J. C. S{\'e}amus Davis},
Although the crystal structures of the copper oxide high-temperature superconductors are complex and diverse, they all contain some crystal planes consisting of only copper and oxygen atoms in a square lattice: superconductivity is believed to originate from strongly interacting electrons in these CuO2 planes. Substituting a single impurity atom for a copper atom strongly perturbs the surrounding electronic environment and can therefore be used to probe high-temperature superconductivity at the… 
Interplay of magnetism and high-Tc superconductivity at individual Ni impurity atoms in Bi2Sr2CaCu2O8+δ
Scanning tunnelling microscopy is used to determine directly the influence of individual Ni atoms on the local electronic structure of Bi2Sr2CaCu2O8+δ and shows that quasiparticle scattering at Ni is predominantly non-magnetic, consistent with predictions for impurity atom phenomena derived from a magnetic mechanism.
Microscopic electronic inhomogeneity in the high-Tc superconductor Bi2Sr2CaCu2O8+x
The presence of an electronic inhomogeneity is reported in Bi2Sr2CaCu2O8+x, a consequence of proximity to a Mott insulator resulting in poor screening of the charge potentials associated with the oxygen ions left in the BiO plane after doping, and is indicative of the local nature of the superconducting state.
Microscopic hamiltonian for Zn- or Ni-substituted high-temperature cuprate superconductors
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Ab initio calculation of impurity effects in copper oxide materials
We describe a method for calculating, within density functional theory, the electronic structure associated with typical defects which substitute for Cu in the CuO2 planes of high-Tc superconducting
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Imaging the Impact of Single Oxygen Atoms on Superconducting Bi2+ySr2–yCaCu2O8+x
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Despite years of intensive research on copper oxide superconductors with high transition temperatures (Tc), the driving force of superconductivity has not yet been clarified. Angle-resolved
Visualizing the atomic-scale electronic structure of the Ca2CuO2Cl2 Mott insulator.
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Impurity-Induced Bound Excitations on the Surface of Bi 2 Sr 2 CaCu 2 O 8
We have probed the effects of atomic-scale impurities on superconductivity in Bi_{2}Sr_{2}CaCu_{2}O_{8} by performing low-temperature tunneling spectroscopy measurements with a scanning tunneling
Theory of Thermal Conductivity in YBa2Cu3O7- delta.
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Atomic-scale quasi-particle scattering resonances in Bi2Sr2CaCu2O8+delta
Low-temperature scanning tunneling spectroscopy of the high transition temperature (high-Tc) cuprate Bi2Sr2CaCu2O8+delta reveals the existence of large numbers of identical regions with diameters of about 3 nanometers that have a relatively high density of low-energy quasi-particle states, consistent with theories of strong quasi- particle scattering from atomic-scale impurities in a d-wave superconductor.
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Local electronic structure of defects in superconductors
The electronic structure near defects (such as impurities) in superconductors is explored using a fully self-consistent technique. This technique exploits the short-range nature of the impurity
Probing the Local Effects of Magnetic Impurities on Superconductivity
The local effects of isolated magnetic adatoms on the electronic properties of the surface of a superconductor were studied with a low-temperature scanning tunneling microscope to understand the details of the local tunneling spectra.
Tunneling into a single magnetic atom: spectroscopic evidence of the kondo resonance
Spectroscopic measurements performed on individual cobalt atoms on the surface of gold show an energetically narrow feature that is identified as the Kondo resonance-the predicted response of a Kondo impurity.
Infrared Probe of Transition from Superconductor to Nonmetal in YBa2s sCu12xZnxd d4O8
We report on a study of the optical conductivity of single crystals of the high-Tc superconductor YBa2Cu4O8 in which superconductivity is suppressed by random substitution of Cu with Zn. The a-axis
Effect of nonmagnetic impurities on the magnetic resonance peak in YBa2Cu3O7
The magnetic excitation spectrum of a YBa2Cu3O7 crystal containing 0.5% of nonmagnetic (Zn) impurities has been determined by inelastic neutron scattering. Whereas in the pure system a sharp