Phys. Rev. B 59, 3851–3854 (1999)Anomalous local atomic correlations in HgBa2CuO4+δReceived 22 October 1997; published in the issue dated 1 February 1999 We have performed extended x-ray-absorption fine-structure (EXAFS) measurements to study the local atomic structure of the HgBa2CuO4+δ (Hg-1201) system across the superconducting transition temperature (Tc). The Debye-Waller factors of atomic pairs obtained by Cu K-edge EXAFS are compared with diffraction data to calculate atomic correlations. The atomic correlations for Cu-O bonds show anomalous temperature dependences across the Tc, highlighting the important role of electron-lattice interactions to derive the superconducting characteristics of the system. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.59.3851
DOI:
10.1103/PhysRevB.59.3851
PACS:
74.72.Dn, 61.10.Ht, 78.70.Dm
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