A structural probe of the doped holes in cuprate superconductors
Peter Abbamonte,Peter Abbamonte,L. Venema,Andrivo Rusydi,G. A. Sawatzky,Gennady Logvenov,Ivan Bozovic +6 more
TLDR
It is demonstrated that in anomalous x-ray scattering at the oxygen K edge of the cuprates, the contribution of carriers to the scattering amplitude is selectively magnified 82 times, permitting direct structural analysis of the superconducting ground state.Abstract:
An unresolved issue concerning cuprate superconductors is whether the distribution of carriers in the CuO2 plane is uniform or inhomogeneous. Because the carriers comprise a small fraction of the total charge density and may be rapidly fluctuating, modulations are difficult to detect directly. We demonstrate that in anomalous x-ray scattering at the oxygen K edge of the cuprates, the contribution of carriers to the scattering amplitude is selectively magnified 82 times. This enhances diffraction from the doped holes by more than 10(3), permitting direct structural analysis of the superconducting ground state. Scattering from thin films of La2CuO4+delta (superconducting transition temperature = 39 K) at temperature = 50 +/- 5 kelvin on the reciprocal space intervals (0,0,0.21) --> (0,0,1.21) and (0,0,0.6) --> (0.3,0,0.6) shows a rounding of the carrier density near the substrate suggestive of a depletion zone or similar effect. The structure factor for off-specular scattering was less than 3 x 10(-7) electrons, suggesting an absence of in-plane hole ordering in this material.read more
Citations
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Phase-sensitive observation of a spin-orbital Mott state in Sr2IrO4.
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Lattice symmetry breaking in cuprate superconductors: stripes, nematics, and superconductivity
TL;DR: In this paper, the authors give an overview of both theoretical and experimental developments concerning states with lattice symmetry breaking in the cuprate high-temperature superconductors. But the results obtained using the techniques of neutron and X-ray scattering and scanning tunnelling spectroscopy are not discussed.
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Resonant X-Ray Scattering Studies of Charge Order in Cuprates
Riccardo Comin,Andrea Damascelli +1 more
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Spatially modulated 'Mottness' in La2-xBaxCuO4
Peter Abbamonte,Peter Abbamonte,Andrivo Rusydi,Andrivo Rusydi,S. Smadici,Genda Gu,George A. Sawatzky,George A. Sawatzky,Donglai Feng +8 more
TL;DR: In this article, the authors studied the charge order in LBCO with resonant soft X-ray scattering (RSXS) and observed significant modulation in both the doped-hole density and the Mottness, or the degree to which the system resembles a Mott insulator.
References
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Effective Hamiltonian for the superconducting Cu oxides
Fu-Chun Zhang,T. M. Rice +1 more
TL;DR: Although assuming that doping creates holes primarily on oxygen sites, this work derives explicitly a single-band effective Hamiltonian for the high-${T}_{c}$ Cu-oxide superconductors.
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Charged magnetic domain lines and the magnetism of high-tc oxides
Jan Zaanen,Olle Gunnarsson +1 more
TL;DR: A tendency towards the formation of charged magnetic domain lines if holes are introduced in such a state can be viewed as a generalization of soliton of the Su, Schrieffer, and Heeger to two dimensions, explaining the incommensurate spin phase observed in the high-{ital T}{sub {ital c}}'s superconductors.
Journal ArticleDOI
A Four Unit Cell Periodic Pattern of Quasi-Particle States Surrounding Vortex Cores in Bi2Sr2CaCu2O8+δ
Jennifer Hoffman,Eric Hudson,Eric Hudson,Kristine Lang,Vidya Madhavan,H. Eisaki,S. Uchida,J. C. Davis,J. C. Davis +8 more
TL;DR: Scanning tunneling microscopy is used to image the additional quasi-particle states generated by quantized vortices in the high critical temperature superconductor Bi2Sr2CaCu2O8+δ, showing a copper-oxygen bond–oriented “checkerboard” pattern, with four unit cell periodicity and a ∼30 angstrom decay length.