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Microwave penetration depth and quasiparticle conductivity of PrFeAsO$$_{1-y}$$ single crystals; Evidence for a full-gap superconductor

PrFeAsO$$_{1-y}$$単結晶の磁場侵入長と準粒子伝導度; フルギャップ超伝導

橋本 顕一郎*; 芝内 孝禎*; 加藤 智成*; 井加田 洸輔*; 岡崎 竜二*; 宍戸 寛明*; 石角 元志; 鬼頭 聖*; 伊豫 彰*; 永崎 洋*; 社本 真一  ; 松田 祐司*

Hashimoto, Kenichiro*; Shibauchi, Takasada*; Kato, Tomonari*; Ikada, Kisuke*; Okazaki, Ryuji*; Shishido, Hiroaki*; Ishikado, Motoyuki; Kito, Hijiri*; Iyo, Akira*; Eisaki, Hiroshi*; Shamoto, Shinichi; Matsuda, Yuji*

PrFeAsO$$_{1-y}$$単結晶(T$$_{c}$$=35K)の表面インピーダンス測定により面内の磁場侵入長$$lambda$$$$_{ab}$$を測定した結果、ギャップにノードが存在しないことがわかった。

In-plane microwave penetration depth $$lambda$$$$_{ab}$$ is measured in underdoped single crystals of the Fe-based superconductor PrFeAsO$$_{1-y}$$ (T$$_{c}$$ = 35 K). $$lambda$$$$_{ab}$$ shows flat dependence at low temperatures, which is incompatible with the presence of nodes in the superconducting gap.

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