Fermi surface, superconducting gap, and many-body effects in Bi2Sr2Can−1CunO2n+4 (n=1–3)

✍ Scribed by T. Sato; H. Matsui; T. Takahashi; H. Ding; H.-B. Yang; S.-C. Wang; T. Fujii; T. Watanabe; A. Matsuda; T. Terashima; K. Kadowaki

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 510 KB
• Volume: 408-410
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2004.03.141

✦ Synopsis

We have performed a systematic angle-resolved photoemission spectroscopy on the high-T c superconducting family of Bi 2 Sr 2 Ca nÀ1 Cu n O 2nþ4 (n ¼ 1-3). We find that large Fermi surface and d-wave superconducting gap are the generic features of Bi-family high-T c cuprates. Comparison of the nodal dispersion in the superconducting state shows that the kink in energy dispersion becomes more pronounced with increasing layer number n, indicating stronger coupling between electrons and a collective mode.