Zero-resistance superconducting phase in BaFe2 As2 under high pressure

Fumihiro Ishikawa, Naoya Eguchi, Michihiro Kodama, Koji Fujimaki, Mari Einaga, Ayako Ohmura, Atsuko Nakayama, Akihiro Mitsuda, Yuh Yamada

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Abstract

A single-crystalline sample of BaFe2 As2 was prepared by high-pressure synthesis, and temperature dependence of resistivity was measured under high pressures of up to 9.0 GPa. Application of 3.0 GPa pressure suppresses the spin-density wave transition and induces superconductivity with the zero resistance state at a superconducting transition temperature Tc =35 K. Tc decreases monotonically with increasing pressure. The appearance of the superconductivity and the disappearance of the anomaly due to the spin-density wave transition occur simultaneously at a pressure of 3.0 GPa. At 3.0 GPa, a superconducting transition is induced in BaFe2 As2; however, the superconductivity is suppressed at higher pressure.

Original languageEnglish
Article number172506
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume79
Issue number17
DOIs
Publication statusPublished - May 1 2009

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Ishikawa, F., Eguchi, N., Kodama, M., Fujimaki, K., Einaga, M., Ohmura, A., Nakayama, A., Mitsuda, A., & Yamada, Y. (2009). Zero-resistance superconducting phase in BaFe2 As2 under high pressure. Physical Review B - Condensed Matter and Materials Physics, 79(17), [172506]. https://doi.org/10.1103/PhysRevB.79.172506