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- Title
STUDY OF ITINERANT HOLES IN PLANAR AND APICAL OXYGEN IN TWO DIFFERENT BSCCO (2212) SINGLE CRYSTALS USING POLARISED X-RAY ABSORPTION.
- Authors
Dalela, B.; Dalela, S.; Saini, N. L.; Singhal, R. K.; Chen, C. T.; Garg, K. B.
- Abstract
X-ray absorption measurements have been made on CuL3 and O K-edge on BSCCO (2212) single crystals annealed under two different conditions at 1 bar O2 (under-doped) and another annealed in 1:4 ratio of O2: Ar (optimally doped) using the F. Y. detection technique. Our results clearly indicate that hole density decreases while going towards c-axis from the ab plane. Our results shows that the doping holes have predominantly x, y symmetry compared to those having pz symmetry. The Tc for both the crystals does not depend on the density of doping holes in the apical oxygen. However, the matter needs to be further explored.
- Subjects
OXYGEN; CRYSTALS; X-ray absorption near edge structure; SUPERCONDUCTIVITY; ABSORPTION spectra; HOLES (Electron deficiencies); PHYSICS
- Publication
International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics, 2004, Vol 18, Issue 20/21, p2841
- ISSN
0217-9792
- Publication type
Article
- DOI
10.1142/S021797920402521X