Anomalous Pressure Dependence of the Superconducting Transition Temperature in FeSe1-x Studied by DC Magnetic Measurements
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概要
- 論文の詳細を見る
The pressure dependence of superconducting transition temperature $T_{\text{c}}$ has been investigated through the DC magnetic measurements for FeSe0.8 and FeSe1.0. For both samples, with increasing pressure $P$, the $T_{\text{c}}$–$P$ curve exhibits a two-step increase, showing a local maximum of ${\sim}11$ K at $P\sim 1.0$ GPa and a rapid increase with an extremely large pressure coefficient for $P>1.5$ GPa. $T_{\text{c}}$ saturates at ${\sim}25$ K (21 K) in FeSe1.0 (FeSe0.8) for $P>3$ GPa. A rapid decrease in superconducting volume fraction is observed with an increase in $T_{\text{c}}$ above 1.5 GPa, suggesting the presence of electronic inhomogeneity.
- Physical Society of Japanの論文
- 2009-09-15
著者
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Miyoshi Kiyotaka
Department Of Electronics And Information Science Faculty Of Engineering And Design Kyoto Institute
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Takaichi Yuta
Department Of Material Science Shimane University
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Takeuchi Jun
Department Of Chemical Science And Technology Faculty Of Engineering Kyushu University
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Fujiwara Kenji
Department Of Gastroenterology And Hepatology Faculty Of Medicine Saitama Medical University
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Miyoshi Kiyotaka
Department of Material Science, Shimane University, Matsue 690-8504
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Mutou Eriko
Department of Material Science, Shimane University, Matsue 690-8504
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Fujiwara Kenji
Department of Chemistry, Faculty of Science, Hokkaido University
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Fujiwara Kenji
Department of Material Science, Shimane University, Matsue 690-8504
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