2008/10/31 by H. Kotegawa, Hisashi Kotegawa, H. Sugawara +3 · 2 citations
Business, Management and Accounting · Chemistry · Materials Science · Physics and Astronomy · #Ambient pressure #Antiferromagnetism #Chemistry #Condensed matter physics #Corporate Taxation and Avoidance #Electrical resistivity and conductivity #Iron-based superconductors research #Materials science #Phase (matter) #Phase boundary #Physics #Stoichiometry #Superconductivity #Thermodynamics #cond-mat.supr-con
paper · pdf · doi:10.1143/jpsj.78.013709
published as J. Phys. Soc. Jpn. 78 (2009) 013709. · 4 pages, 4 figures, to be published in J. Phys. Soc. Jpn. 78 No.1 (2009)
arxiv created 2008/11/19 · openalex publication_date 2008/12/25 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We report resistivity measurement under pressure in single crystals of SrFe2As2, which is one of the parent materials of Fe-based superconductors. The structural and antiferromagnetic (AFM) transition of T0 = 198 K at ambient pressure is suppressed under pressure, and the ordered phase disappears above Pc ~ 3.6-3.7 GPa. Superconductivity with a sharp transition appears accompanied by the suppression of the AFM state. Tc exhibits a maximum of 34.1 K, which is realized close to the phase boundary at Pc. This Tc is the highest among those of the stoichiometric Fe-based superconductors.