Nature of empty states in YBa2Cu3O7-x

E. E. Alp; J. C. Campuzano; G. Jennings; J. Guo; D. E. Ellis; L. Beaulaigue; S. Mini; M. Faiz; Y. Zhou; B. W. Veal; J. Z. Liu

doi:10.1103/PhysRevB.40.9385

Nature of empty states in YBa2Cu3O7-x

E. E. Alp^*, J. C. Campuzano, G. Jennings, J. Guo, D. E. Ellis, L. Beaulaigue, S. Mini, M. Faiz, Y. Zhou, B. W. Veal, J. Z. Liu

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

Angle resolved oxygen K-edge x-ray absorption spectroscopy measurements were performed on single crystals of YBa2Cu3O6.9. Measurements were carried out on in situ cleaved crystals at 20 K to minimize the loss of oxygen from the surface region of the samples. It was found that there are two distinct transitions between 526 and 531 eV. The peaks in YBa2Cu3O6.9 show strong orientation dependence, as well as energy dispersion of 2 eV. After the sample is heated to room temperature, there is only one peak visible which shows little energy dispersion or orientation dependence. Comparison of the experimental results to a transition-state calculation of the absorption cross section shows good agreement indicating that there are holes of symmetry on all Cu-O bonds.

Original language	English (US)
Pages (from-to)	9385-9388
Number of pages	4
Journal	Physical Review B
Volume	40
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.40.9385
State	Published - 1989

ASJC Scopus subject areas

Condensed Matter Physics

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10.1103/PhysRevB.40.9385

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title = "Nature of empty states in YBa2Cu3O7-x",

abstract = "Angle resolved oxygen K-edge x-ray absorption spectroscopy measurements were performed on single crystals of YBa2Cu3O6.9. Measurements were carried out on in situ cleaved crystals at 20 K to minimize the loss of oxygen from the surface region of the samples. It was found that there are two distinct transitions between 526 and 531 eV. The peaks in YBa2Cu3O6.9 show strong orientation dependence, as well as energy dispersion of 2 eV. After the sample is heated to room temperature, there is only one peak visible which shows little energy dispersion or orientation dependence. Comparison of the experimental results to a transition-state calculation of the absorption cross section shows good agreement indicating that there are holes of symmetry on all Cu-O bonds.",

author = "Alp, {E. E.} and Campuzano, {J. C.} and G. Jennings and J. Guo and Ellis, {D. E.} and L. Beaulaigue and S. Mini and M. Faiz and Y. Zhou and Veal, {B. W.} and Liu, {J. Z.}",

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language = "English (US)",

volume = "40",

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T1 - Nature of empty states in YBa2Cu3O7-x

AU - Alp, E. E.

AU - Campuzano, J. C.

AU - Jennings, G.

AU - Guo, J.

AU - Ellis, D. E.

AU - Beaulaigue, L.

AU - Mini, S.

AU - Faiz, M.

AU - Zhou, Y.

AU - Veal, B. W.

AU - Liu, J. Z.

PY - 1989

Y1 - 1989

N2 - Angle resolved oxygen K-edge x-ray absorption spectroscopy measurements were performed on single crystals of YBa2Cu3O6.9. Measurements were carried out on in situ cleaved crystals at 20 K to minimize the loss of oxygen from the surface region of the samples. It was found that there are two distinct transitions between 526 and 531 eV. The peaks in YBa2Cu3O6.9 show strong orientation dependence, as well as energy dispersion of 2 eV. After the sample is heated to room temperature, there is only one peak visible which shows little energy dispersion or orientation dependence. Comparison of the experimental results to a transition-state calculation of the absorption cross section shows good agreement indicating that there are holes of symmetry on all Cu-O bonds.

AB - Angle resolved oxygen K-edge x-ray absorption spectroscopy measurements were performed on single crystals of YBa2Cu3O6.9. Measurements were carried out on in situ cleaved crystals at 20 K to minimize the loss of oxygen from the surface region of the samples. It was found that there are two distinct transitions between 526 and 531 eV. The peaks in YBa2Cu3O6.9 show strong orientation dependence, as well as energy dispersion of 2 eV. After the sample is heated to room temperature, there is only one peak visible which shows little energy dispersion or orientation dependence. Comparison of the experimental results to a transition-state calculation of the absorption cross section shows good agreement indicating that there are holes of symmetry on all Cu-O bonds.

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JF - Physical Review B

IS - 13

ER -

Nature of empty states in YBa2Cu3O7-x

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