Abstract
The O-1s x-ray near-edge-absorption spectra of La1.5-xCaxBa1.5Cu3Oy have been measured by using synchrotron radiation. Their spectral features of the pre-edge spectra indicate that there is an electronic structure change similar to the effect of Pr in Y1-xPrxBa2Cu3O7-δ; the holes on the CuO2 planes increase with the doping concentration of Ca ions; not all the excess oxygen (for y≧7.0) in the basal plane supply holes; and there is a sign of increasing, rather than decreasing, the holes around the apical oxygen O(4) with the increase of the replacement of Ba by La on the Ba sites, an indication of a redistribution of holes.
| Original language | English |
|---|---|
| Pages (from-to) | 4357-4362 |
| Number of pages | 6 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 60 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1999 Jan 1 |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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O-1s x-ray near-edge absorption spectroscopy studies of La1.5-xCaxBa1.5Cu3Oy and La1.5CaxBa1.5-xCu3Oy. / Song, Y. F.; Chang, C. N.; Kao, H. C.I.; Hsieh, C. H.; Liu, H. F.; Lin, H. D.; Huang, W. W.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 60, No. 6, 01.01.1999, p. 4357-4362.Research output: Contribution to journal › Article
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TY - JOUR
T1 - O-1s x-ray near-edge absorption spectroscopy studies of La1.5-xCaxBa1.5Cu3Oy and La1.5CaxBa1.5-xCu3Oy
AU - Song, Y. F.
AU - Chang, C. N.
AU - Kao, H. C.I.
AU - Hsieh, C. H.
AU - Liu, H. F.
AU - Lin, H. D.
AU - Huang, W. W.
PY - 1999/1/1
Y1 - 1999/1/1
N2 - The O-1s x-ray near-edge-absorption spectra of La1.5-xCaxBa1.5Cu3Oy have been measured by using synchrotron radiation. Their spectral features of the pre-edge spectra indicate that there is an electronic structure change similar to the effect of Pr in Y1-xPrxBa2Cu3O7-δ; the holes on the CuO2 planes increase with the doping concentration of Ca ions; not all the excess oxygen (for y≧7.0) in the basal plane supply holes; and there is a sign of increasing, rather than decreasing, the holes around the apical oxygen O(4) with the increase of the replacement of Ba by La on the Ba sites, an indication of a redistribution of holes.
AB - The O-1s x-ray near-edge-absorption spectra of La1.5-xCaxBa1.5Cu3Oy have been measured by using synchrotron radiation. Their spectral features of the pre-edge spectra indicate that there is an electronic structure change similar to the effect of Pr in Y1-xPrxBa2Cu3O7-δ; the holes on the CuO2 planes increase with the doping concentration of Ca ions; not all the excess oxygen (for y≧7.0) in the basal plane supply holes; and there is a sign of increasing, rather than decreasing, the holes around the apical oxygen O(4) with the increase of the replacement of Ba by La on the Ba sites, an indication of a redistribution of holes.
UR - http://www.scopus.com/inward/record.url?scp=0001738695&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0001738695&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.60.4357
DO - 10.1103/PhysRevB.60.4357
M3 - Article
AN - SCOPUS:0001738695
VL - 60
SP - 4357
EP - 4362
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 1098-0121
IS - 6
ER -