Interplay of Superconductivity and Fermi-Liquid Transport in Rh-Doped CaFe2As2 with Lattice-Collapse Transition
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概要
- 論文の詳細を見る
Ca(Fe1-xRhx)2As2 undergoes successive phase transitions with increasing Rh doping in the T = 0 limit. The antiferromagnetic-metal phase with orthorhombic structure at 0.00 \leq x \leq 0.020 is driven to a superconducting phase with uncollapsed-tetragonal (ucT) structure at 0.020 \leq x \leq 0.024; a non-superconducting collapsed-tetragonal (cT) phase takes over at x \geq 0.024. The breakdown of Fermi-liquid transport is observed in the ucT phase above T_{\text{c}}. In the adjacent cT phase, Fermi-liquid transport is restored along with a disappearance of superconductivity. This interplay of superconductivity and Fermi-liquid transport suggests the essential role of magnetic fluctuations in the emergence of superconductivity in doped CaFe2As2.
- 2011-10-15
著者
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Kudo Kazutaka
Department Of Applied Physics Graduate School Of Engineering Tohoku University
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Kobayashi Tatsuo
Departmant Of Physics Kyoto University
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Nohara Minoru
Department Of Advanced Materials Science University Of Tokyo
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Danura Masataka
Department of Physics, Faculty of Science, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
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Araki Shingo
Department of Applied Chemistry, Faculty of Engineering, Osaka University
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Oshiro Yoshihiro
Department of Physics, Okayama University, Okayama 700-8530, Japan
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