Atomic-scale spot structures and gap distributions on apical-fluorine cuprate superconductor Ba2Ca5Cu6O12 (O1−x, Fx)2 observed by STM/STS

Physica C: Superconductivity and its Applications 470 巻 S160-S162 頁 2009-12 発行
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タイトル ( eng )
Atomic-scale spot structures and gap distributions on apical-fluorine cuprate superconductor Ba2Ca5Cu6O12 (O1−x, Fx)2 observed by STM/STS
作成者
Shohara K.
Ekino T.
Watanabe Y.
Harada Y.
Mikusu S.
Tokiwa K.
Watanabe T.
収録物名
Physica C: Superconductivity and its Applications
470
開始ページ S160
終了ページ S162
抄録
The atomic-scale surface electronic states on the multi-layered apical-fluorine cuprate superconductor Ba2Ca5Cu6O12 (O1−x, Fx)2 (Tc ≃ 70K) are investigated by using low temperature scanning tunneling microscopy/spectroscopy (STM/STS). The spatial gap distributions show the patch scale of ∼ 0.5 nm, which is quite shorter than the superconducting coherence length ∼ 2-3 nm of other cuprate superconducters of a few nm. The high-bias (∼ 1V) conductance map contains some characteristic spots with contrasts reverse to those at low bias, which are considered to be due to the charge unbalance of apical atoms such as O2− and F−.
著者キーワード
Apical-fluorine cuprate
F0256
STM/STS
内容記述
This research was supported by Grant-in-Aid for Scientific Research (No. 19540370) from JSPS, Japan.
NDC分類
物理学 [ 420 ]
言語
英語
資源タイプ 学術雑誌論文
出版者
Elsevier B.V.
発行日 2009-12
権利情報
Copyright (c) 2009. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
出版タイプ Author’s Original(十分な品質であるとして、著者から正式な査読に提出される版)
アクセス権 オープンアクセス
収録物識別子
[ISSN] 0921-4534
[NCID] AA11461984
[DOI] 10.1016/j.physc.2009.12.004
[DOI] https://doi.org/10.1016/j.physc.2009.12.004