抄録
We have performed systematic angle-resolved photoemission spectroscopy on the high-Tc superconducting family of Bi2Sr2Can-1CunO2n+4 (n = 1-3). In addition to the generic features of the large Fermi surface and d-wave superconducting gap, we have found that there exists a scaling of the doping dependence of the energy gap. Moreover, comparison of the nodal dispersion in the superconducting state shows that the "kink" (the sudden change of band dispersion), while occurring at a similar binding energy, becomes more pronounced with increasing layer number n, indicating stronger coupling between electrons and a collective mode.
本文言語 | English |
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論文番号 | 060501 |
ページ(範囲) | 605011-605014 |
ページ数 | 4 |
ジャーナル | Physical Review B - Condensed Matter and Materials Physics |
巻 | 67 |
号 | 6 |
出版ステータス | Published - 2003 2月 1 |
外部発表 | はい |
ASJC Scopus subject areas
- 電子材料、光学材料、および磁性材料
- 凝縮系物理学