We have used polarized Cu K-edge extended x-ray absorption fine structure to investigate the local lattice displacements in the charge-ordered La(1.48)Nd(0.4)Sr(0.12)CuO(4) system. The temperature-dependent distance broadening, given by the Debye-Waller factors of the Cu-O bonds measuring local lattice fluctuations, shows a clear steplike increase below the charge stripe order temperature. The results construct a direct evidence for the local lattice fluctuations as a response function of the charge stripe ordering in the cuprate superconductors.
Evidence for Local Lattice fluctuations as a response function of the charge stripe order in the La1.48Nd0.4Sr0.12Cu04 system / Saini, Naurang Lal; H. OYANAGI A., Lanzara; D., DI CASTRO; S., Agrestini; Bianconi, Antonio; F., Nakamura; T., Fujita. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - STAMPA. - 64:(2001), pp. 132510-1-132510-4. [10.1103/PhysRevB.64.132510]
Evidence for Local Lattice fluctuations as a response function of the charge stripe order in the La1.48Nd0.4Sr0.12Cu04 system
SAINI, Naurang Lal;BIANCONI, Antonio;
2001
Abstract
We have used polarized Cu K-edge extended x-ray absorption fine structure to investigate the local lattice displacements in the charge-ordered La(1.48)Nd(0.4)Sr(0.12)CuO(4) system. The temperature-dependent distance broadening, given by the Debye-Waller factors of the Cu-O bonds measuring local lattice fluctuations, shows a clear steplike increase below the charge stripe order temperature. The results construct a direct evidence for the local lattice fluctuations as a response function of the charge stripe ordering in the cuprate superconductors.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
