Abstract's Details

Oxygen Chain Order in the Model High-temperature Superconductor HgBa₂CuO_4+d
Abstract ID	MAT-05
Presenter	Guillaume Chabot-Couture
Presentation Type	Poster
Full Author List	G. Chabot-Couture (1), J. N. Hancock (2), L. Lu (1), Z. Islam (3), A. Mehta (2), X. Zhao (2), Y.-C. Cho (2), G. Yu (1), Y. Li (1), M. Greven (1)
Affiliations	(1) Stanford University (2) Stanford Synchrotron Radiation Laboratory (3) Advanced Photon Source, Argonne National Laboratories
Category	Materials Science
Abstract	We here present the discovery of oxygen chain formation in the charge reservoir of the model high- temperature superconductor HgBa₂CuO_4+d. Using diffuse X-ray scattering at a synchrotron light source and high-quality single crystals, we observe a displacement based superstructure throughout reciprocal space. Careful analysis of the intensity pattern as well as a rudimentary study of the doping and temperature dependence all point toward the formation of oxygen chains in the charge reservoir of this superconductor. The chain length is measured to be between 15 and 18 atoms long depending on the sample studied.
Footnotes
Funding Acknowledgement	The work at Stanford was supported by funding from the Department of Energy and the National Science Foundation.