Pressure enhancement of superconductivity in an iron-based layered compound LaFeAsO1-xFx

H. Takahashi, K. Igawa, Y. Takahashi, K. Arii, H. Okada, Y. Kamihara, M. Hirano, H. Hosono, K. Matsubayashi, Y. Uwatoko, S. Nakano, T. Kikegawa

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Abstract

Electrical resistivity measurements under high pressure were performed on iron-based superconductor LaFeAsO1-xFx. A steep increase in superconducting transition temperature (Tc) was observed for "optimum-doped" LaFeAsO0.89F0.11, whereas "under-doped" LaFeAsO0.95F0.05 shows a moderate increase in Tc with applying pressure. X-ray diffraction measurements were also performed under high pressure up to 10 GPa. A ratio c/a was observed to decrease with applying pressure, which is similar to the pressure effect on cuprate high-Tc superconductors.

Original languageEnglish
Article number052257
JournalJournal of Physics: Conference Series
Volume150
Issue number5
DOIs
Publication statusPublished - 2009 Jan 1

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Takahashi, H., Igawa, K., Takahashi, Y., Arii, K., Okada, H., Kamihara, Y., Hirano, M., Hosono, H., Matsubayashi, K., Uwatoko, Y., Nakano, S., & Kikegawa, T. (2009). Pressure enhancement of superconductivity in an iron-based layered compound LaFeAsO1-xFx. Journal of Physics: Conference Series, 150(5), [052257]. https://doi.org/10.1088/1742-6596/150/5/052257