セガワ コウジ   SEGAWA KOJI
  瀬川 耕司
   所属   京都産業大学  理学部 物理科学科
   職種   教授
言語種別 英語
発行・発表の年月 2011/08
形態種別 研究論文
標題 Electrochemical synthesis and superconducting phase diagram of CuxBi2Se3
執筆形態 その他
掲載誌名 PHYSICAL REVIEW B
出版社・発行元 AMER PHYSICAL SOC
巻・号・頁 84(5)
著者・共著者 M. Kriener,Kouji Segawa,Zhi Ren,Satoshi Sasaki,Shohei Wada,Susumu Kuwabata,Yoichi Ando
概要 The superconducting CuxBi2Se3 is an electron-doped topological insulator and is a prime candidate of the topological superconductor which still awaits discovery. The electrochemical intercalation technique for synthesizing CuxBi2Se3 offers good control of restricting Cu into the van der Waals gap and yields samples with shielding fractions of up to similar to 50%. We report essential details of this synthesis technique and present the established superconducting phase diagram of T-c vs x, along with a diagram of the shielding fraction vs x. Intriguingly, those diagrams suggest that there is a tendency to spontaneously form small islands of optimum superconductor in this material.
DOI 10.1103/PhysRevB.84.054513
ISSN 1098-0121
PermalinkURL https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=80052355850&origin=inward