Phys. Rev. B 64, 132510 (2001) [4 pages]Evidence for local lattice fluctuations as a response function of the charge stripe order in the La1.48Nd0.4Sr0.12CuO4 systemReceived 29 January 2001; revised 31 May 2001; published 13 September 2001 We have used polarized Cu K-edge extended x-ray absorption fine structure to investigate the local lattice displacements in the charge-ordered La1.48Nd0.4Sr0.12CuO4 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. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.64.132510
DOI:
10.1103/PhysRevB.64.132510
PACS:
74.72.Dn, 61.10.Ht, 74.80.-g, 78.70.Dm
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