X-ray absorption measurements have been made on Cu L3 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.
STUDY OF ITINERANT HOLES IN PLANAR AND APICAL OXYGEN IN TWO DIFFERENT BSCCO (2212) SINGLE CRYSTALS USING POLARISED X-RAY ABSORPTION / B., Dalela; S., Dalela; Saini, Naurang Lal; R. K., Singhal; C. T., Chen; K. B., Garg. - In: INTERNATIONAL JOURNAL OF MODERN PHYSICS B. - ISSN 0217-9792. - 18:20n21(2004), pp. 2841-2848. [10.1142/s021797920402521x]
STUDY OF ITINERANT HOLES IN PLANAR AND APICAL OXYGEN IN TWO DIFFERENT BSCCO (2212) SINGLE CRYSTALS USING POLARISED X-RAY ABSORPTION
SAINI, Naurang Lal;
2004
Abstract
X-ray absorption measurements have been made on Cu L3 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
