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Resolving CuO chain and CuO2 plane contributions to the YBa2Cu3O7−δ valence band by standing-wave excited hard x-ray photoelectron spectroscopy - Deleted

DOI: 10.1103/PhysRevB.92.075117 DOI Help

Authors: S. Thiess (ESRF) , T.-L. Lee (ESRF) , C. Aruta (National Research Council CNR-SPIN) , C. T. Lin (Max-Planck-Institut für Festkörperforschung) , F. Venturini (ESRF) , N. B. Brookes (ESRF) , B. C. C. Cowie (ESRF) , J. Zegenhagen (ESRF)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Physical Review B , VOL 92

State: Published (Approved)
Published: August 2015

Abstract: We analyzed the valence band (VB) of the 90 K high-temperature superconductor YBa2Cu3O7−δ by photoelectron spectroscopy under standing-wave excitation employing hard x rays. Precisely positioning the standing-wave intensity in the unit cell allows selectively probing the VB yield from the CuO chains and CuO2 planes, respectively. Both contribute strongly over the whole VB but the spectral weight of the planes is significantly higher than the chains within about 2 eV from the Fermi level. In the x-ray regime, the major contribution to the VB emission is coming from Cu 3d.

Journal Keywords: Density of states; High-temperature superconductors; Hard x-ray photoelectron spectroscopy; X-ray standing waves

Subject Areas: Physics, Materials

Technical Areas:

Added On: 06/01/2016 12:53

Discipline Tags:

Superconductors Quantum Materials Physics Hard condensed matter - structures Materials Science

Technical Tags: