Magnetic Ordering in V-Layers of the Superconducting System of Sr2VFeAsO3

Details Magnetic Ordering in V-Layers of the Superconducting System of Sr2VFeAsO3 Magnetic Ordering in V-Layers of the Superconducting System of Sr2VFeAsO3

2010-12-13

arxiv.org/abs/1012.2654v1

J. Phys. Soc. Jpn., Vol.79 (2010) No.12, p.123712

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures, To appear in JPSJ 79 (2010) 123712

Scientific paper

10.1143/JPSJ.79.123712

Results of transport, magnetic, thermal, and 75As-NMR measurements are presented for superconducting Sr2VFeAsO3 with an alternating stack of FeAs and perovskite-like block layers. Although apparent anomalies in magnetic and thermal properties have been observed at ~150 K, no anomaly in transport behaviors has been observed at around the same temperature. These results indicate that V ions in the Sr2VO3-block layers have localized magnetic moments and that V-electrons do not contribute to the Fermi surface. The electronic characteristics of Sr2VFeAsO3 are considered to be common to those of other superconducting systems with Fe-pnictogen layers.

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