Anharmonic thermal motion in the 93-K superconductor Ba2YCu3O7 using multiple-wavelength x-ray diffraction

P. Marsh, T. Siegrist, R. M. Fleming, L. F. Schneemeyer, J. V. Waszczak

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

We have obtained anisotropic thermal parameters for Ba2YCu3O7 from a dual-wavelength x-ray crystal structure determination on a single crystal with a small amount of twinning. Anharmonic thermal motion was found for both Ba and Cu atoms with the largest anharmonic feature attributed to a Ba-Ba breathing mode. The anisotropic and anharmonic thermal parameters are consistent with the coordination polyhedra as well as the bonding distances involved.

Original languageEnglish
Pages (from-to)874-877
Number of pages4
JournalPhysical Review B
Volume38
Issue number1
DOIs
StatePublished - 1 Jan 1988

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