Pressure-induced splitting and buckling of Cu-O chains in the low-dimensional structure of SrCuO2

Fuxiang Zhang; Jianwei Wang; Udo Becker; Jie Lian; Jingzhu Hu; Surendra Saxena; Rodney C Ewing

doi:10.1021/ja074290w

Pressure-induced splitting and buckling of Cu-O chains in the low-dimensional structure of SrCuO2

J Am Chem Soc. 2007 Nov 14;129(45):13923-6. doi: 10.1021/ja074290w. Epub 2007 Oct 23.

Authors

Fuxiang Zhang¹, Jianwei Wang, Udo Becker, Jie Lian, Jingzhu Hu, Surendra Saxena, Rodney C Ewing

Affiliation

¹ Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA.

PMID: 17956092
DOI: 10.1021/ja074290w

Abstract

A pressure-induced splitting of the Cu-O chains was found in SrCuO2 at pressures >7 GPa and room temperature. The high-pressure phase is a superstructure of the infinite-layered tetragonal superconducting phase of SrCuO2 and is not stable under ambient conditions. The Cu-O chains buckle with further increasing pressure, and a new high-density polymorph of SrCuO2 is formed at 34.2 GPa.