Superconductivity in Co-doped SmFeAsO

Details Superconductivity in Co-doped SmFeAsO Superconductivity in Co-doped SmFeAsO

2008-08-04

arxiv.org/abs/0808.0197v2

Supercond. Sci. Technol. 21 (2008) 115016

Physics

Condensed Matter

Superconductivity

11 pages, 3 figures

Scientific paper

10.1088/0953-2048/21/11/115016

Here we report the synthesis and basic characterization of SmFe1-xCoxAsO (x=0.10, 0.15). The parent compound SmFeAsO itself is not superconducting but shows an antiferromagnetic order near 150 K, which must be suppressed by doping before superconductivity emerges. With Co-doping in the FeAs planes, antiferromagnetic order is destroyed and superconductivity occurs at 15 K. Similar to LaFe1-xCoxAsO, the SmFe1-xCoxAsO system appears to tolerate considerable disorder in the FeAs planes. This result is important, which indicates difference between cuprare superconductors and the iron-based arsenide ones.

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