Unusual Layer-Dependent Charge Distribution, Collective Mode Coupling, and Superconductivity in Multilayer Cuprate Ba2Ca3Cu4O8F2
Physical Review Letters 103 巻 3 号
2009-07-17 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Unusual Layer-Dependent Charge Distribution, Collective Mode Coupling, and Superconductivity in Multilayer Cuprate Ba2Ca3Cu4O8F2
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| 作成者 |
Chen Yulin
Iyo Akira
Yang Wanli
Arita Masashi
Johnston Steve
Eisaki Hiroshi
Devereaux Thomas P
Hussain Zahid
Shen Z -X
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| 収録物名 |
Physical Review Letters
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| 巻 | 103 |
| 号 | 3 |
| 抄録 |
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.
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| NDC分類 |
物理学 [ 420 ]
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
Amer Physical Soc
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| 発行日 | 2009-07-17 |
| 権利情報 |
Copyright (c) 2009 American Physical Society.
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| 出版タイプ | Version of Record（出版社版。早期公開を含む） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 0031-9007
[DOI] 10.1103/PhysRevLett.103.036403
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.103.036403
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