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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
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: