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ID 28891
本文ファイル
著者
Chen, Yulin
Iyo, Akira
Yang, Wanli
Arita, Masashi
Johnston, Steve
Eisaki, Hiroshi
Devereaux, Thomas P
Hussain, Zahid
Shen, Z -X
NDC
物理学
抄録(英)
Low energy ultrahigh momentum resolution angle resolved photoemission spectroscopy study on four-layer self-doped high T-c superconductor Ba2Ca3Cu4O8F2 (F0234) revealed fine structure in the band dispersion, identifying the unconventional association of hole and electron doping with the inner and outer CuO2 layers, respectively. For the states originating from two inequivalent CuO2 layers, different energy scales are observed in dispersion kinks associated with the collective mode coupling, with the larger energy scale found in the electron (n-) doped state which also has stronger coupling strength. Given the earlier finding that the superconducting gap is substantially larger along the n-type Fermi surface, our observations connect the mode coupling energy and strength with magnitude of the pairing gap.
掲載誌名
Physical Review Letters
103巻
3号
出版年月日
2009-07-17
出版者
Amer Physical Soc
ISSN
0031-9007
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
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権利情報
Copyright (c) 2009 American Physical Society.
関連情報URL
部局名
理学研究科