Cu K-edge Extended X-ray Absorption Fine Structure (EXAFS) measurements have been made to understand the local structure of superconducting La2CuO4.1 single crystal. The temperature dependent correlated Debye-Waller factors of Cu-O(planar) and Cu-La pairs show anomalous behavior at similar to 170 K. This temperature has been assigned to the ordering of CuO6 octahedral tiltings. The results show an interplay between the structural modulation of the perovskite and rock-salt layers in the title compound.
Anomalous Structural Modulations in La2CuO4.1 / A., Lanzara; Saini, Naurang Lal; Bianconi, Antonio; F. C., Chou; D. C., Johnston. - In: PHYSICA. C, SUPERCONDUCTIVITY. - ISSN 0921-4534. - STAMPA. - 296:(1998), pp. 7-12. [10.1016/S0921-4534(97)01823-6]
Anomalous Structural Modulations in La2CuO4.1
SAINI, Naurang Lal;BIANCONI, Antonio;
1998
Abstract
Cu K-edge Extended X-ray Absorption Fine Structure (EXAFS) measurements have been made to understand the local structure of superconducting La2CuO4.1 single crystal. The temperature dependent correlated Debye-Waller factors of Cu-O(planar) and Cu-La pairs show anomalous behavior at similar to 170 K. This temperature has been assigned to the ordering of CuO6 octahedral tiltings. The results show an interplay between the structural modulation of the perovskite and rock-salt layers in the title compound.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
